TW201443303A - Spun yarn that contains polymethylpentene fiber, and fiber structure made of same - Google Patents

Abstract

The present invention addresses the problem of providing a spun yarn which exhibits excellent lightness, heat retaining properties, rapid drying properties, and heat resistance in ironing and which can be suitably employed as a fiber structure such as a woven, knitted or nonwoven fabric. A spun yarn which contains a polymethylpentene fiber that comprises a polymethylpentene-based resin as a main component and that has a single fiber fineness of 1 to 20dtex and which has a twist coefficient (K) of 1.3 to 6.5 as calculated according to formula (I): K = T N1/2 [wherein T is a twist number (twists/25.4mm) and N is an English cotton count].

Description

Textile yarn containing polymethylpentene fibers and fiber structures containing the same

The present invention relates to a textile yarn comprising polymethylpentene fibers. More specifically, the textile yarn is excellent in lightweight simultaneous heat retention, quick-drying property, and ironing heat resistance.

Various types of textile yarns have been proposed so far in order to obtain a lightweight and highly heat-resistant woven fabric. As a general method relating to the weight reduction of a textile yarn, the formation of the hollow part or the inter-fiber gap is mentioned. Since the hollow portion or the interfiber space contains air, it exhibits heat retention in addition to being lightweight.

Patent Document 1 proposes a textile yarn of hollow polyester fibers. In this proposal, the textile yarn is imparted with lightness and heat retention by the hollow portion.

Patent Document 2 proposes a textile yarn comprising a highly shrinkable polyolefin fiber. In this proposal, the fibers are shrunk by heat treatment to form interfiber spaces, and the textile yarn is imparted with lightness.

In Patent Document 3, it is proposed to use a woven fabric of a split type composite fiber comprising two or more kinds of thermoplastic resins having low affinity. In this proposal, a polypropylene yarn having a low specific gravity and polymethylpentene is compounded at a ratio of 1:1, and a textile yarn having a single yarn fineness of about 0.2 denier (about 0.22 dtex) is obtained by division.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2007-70768

[Patent Document 2] Japanese Patent Laid-Open No. Hei 5-44108

[Patent Document 3] Japanese Patent Laid-Open No. 3-269126

In the method described in the above Patent Document 1, since the specific gravity of the polyester fiber disclosed in the document is as high as 1.38, it is necessary to increase the hollow ratio in order to improve the lightweight property. However, when the hollow ratio is high, cracking or collapse of the hollow portion occurs in the step before the yarn is formed, and the weight imparting is limited.

In the method of Patent Document 2, since the fabric itself shrinks, the braid structure becomes dense and easily hardens, and there is a problem that the lightweight or the flexibility is impaired. Further, since the polyolefin fiber disclosed in Patent Document 2 has a low melting point, the ironing heat resistance is low, and it is limited to the development use in the field of general clothing.

In the method of Patent Document 3, since the single yarn fineness of the fibers constituting the obtained textile yarn is small, there is a problem that the grade is extremely lowered due to occurrence of fluff or the like.

An object of the present invention is to solve the problems of the above-mentioned conventional techniques, and to provide a fiber structure which is excellent in speed, heat retention, quick-drying property, and ironing heat resistance, and can be suitably used as a knitted fabric or a nonwoven fabric. Body textile yarn.

The problem of the present invention is solved by a textile yarn in which 60% by weight or more of the constituent components are polymethylpentene-based resins and polymethylpentene fibers having a single-filament fineness of 2 to 20 dtex are formed. When the number of turns is T (back/25.4 mm) and the number of British cotton counts is N, the coefficient K of the formula calculated by the following formula (I) is 1.3 to 6.5.

(I)K=T÷N ^1/2

Further, the polymethylpentene fiber may contain a thermoplastic resin different from the polymethylpentene resin in the polymethylpentene resin, and the average fiber length of the polymethylpentene fiber may suitably be 10~ 100mm.

Furthermore, the textile yarn obtained by blending the polymethylpentene fiber with chemical fiber or natural fiber may be used as the (A), the chemical fiber or the natural fiber. When (B) is used, the blend ratio (weight ratio) of (A) and (B) is preferably A/B = 85/15 to 97/3, and the apparent specific gravity of the textile yarn is preferably 0.83 to 1.2. The melting point or decomposition temperature of the chemical fiber or the natural fiber is preferably 200 ° C or higher. The chemical fiber may be suitably a polyester fiber, a polyamide fiber, a polyacrylonitrile fiber, or a cellulose fiber, and the natural fiber is cotton, crepe, hemp, and wool.

Further, the textile yarn containing the polymethylpentene fiber described above can be applied to at least a part of the fiber structure.

According to the present invention, it is possible to provide a textile yarn which is lightweight and has excellent heat retention properties, quick-drying properties, and ironing heat resistance. Further, by using a polymethylpentene fiber containing a thermoplastic resin, color development of the textile yarn can be imparted. By this The textile yarn obtained by the invention can be applied to a wide range of applications such as general clothing, sportswear, bedding, interiors, and materials by being a fiber structure such as a woven fabric or a non-woven fabric.

[Formation of the Invention]

60% by weight or more of the constituent component of the textile yarn system of the present invention is a polymethylpentene-based resin and contains a polymethylpentene fiber having a single-filament fineness of 2 to 20 dtex, and the number of turns is T (back/25.4 mm). When the British cotton count is N, the enthalpy coefficient K calculated by the following formula (I) is 1.3 to 6.5.

(I)K=T÷N ^1/2

The textile yarn of the present invention is composed of polymethylpentene fibers. Since the polymethyl pentene-based resin of the polyolefin-based resin has a low thermal conductivity similarly to polyethylene or polypropylene of other polyolefin-based resins, it has excellent heat retaining properties and is excellent in quick-drying property because of high hydrophobicity. Further, the polymethylpentene-based resin has a lower specific gravity than polyethylene or polypropylene, and is extremely excellent in light weight. Further, since the melting point or the softening point is higher than that of other polyolefin-based resins and the heat resistance is excellent, an iron can be used, and it can be used for applications at high temperatures in addition to general clothing applications. Therefore, by including a polymethylpentene fiber containing a polymethylpentene-based resin as a constituent component and satisfying the above-mentioned respective requirements, it is possible to obtain a textile having excellent lightweight, heat-insulating property, quick-drying property, and ironing heat resistance. yarn.

In the present invention, 60% by weight or more of the constituent component is a polymethylpentene fiber of a polymethylpentene-based resin, which means in the fiber. A polymethylpentene fiber containing 60% by weight or more of a polymethylpentene-based resin. The polymethylpentene fiber may contain a thermoplastic resin or various additives different from the polymethylpentene resin in the polymethylpentene resin, as needed. In addition, the polymethylpentene fiber is a thermoplastic resin or a variety of additives different from the polymethylpentene resin in the polymethylpentene resin, and it means that the polymethylpentene fiber contains polymethylene. The pentene-based resin further contains a thermoplastic resin or various additives different from the polymethylpentene-based resin. In this case, in order not to impair the excellent lightweight property of the polymethylpentene-based resin, the polymethylpentene fiber must contain 60% by weight or more of the polymethylpentene-based resin.

The polymethylpentene-based resin in the present invention may, for example, be a 4-methyl-1-pentene-based polymer, and may be a homopolymer of 4-methyl-1-pentene or a 4- A copolymer of methyl-1-pentene with other alpha-olefins. These other α-olefins (hereinafter sometimes referred to simply as α-olefins) may be copolymerized in one type or in two or more types.

The α-olefin has a carbon number of preferably 2 to 20, and the molecular chain of the α-olefin may be linear or branched. Specific examples of such α-olefins include ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, and 1- Tetradecene, 1-hexadecene, 1-octadecene, 1-eicosene, 3-methyl-1-butene, 3-methyl-1-pentene, 3-ethyl-1-pentyl Alkene, 3-ethyl-1-hexene, etc., but are not limited by these.

The copolymerization ratio of the above α-olefin is preferably 20 mol% or less based on the total number of moles of 4-methyl-1-pentene and α-olefin. When the copolymerization ratio of the α-olefin is 20 mol% or less, a textile yarn having good mechanical properties or heat resistance is preferably obtained. The copolymerization ratio of the α-olefin is more preferably 15 mol% Hereinafter, it is preferably 10 mol% or less.

The melting point of the polymethylpentene resin in the present invention is preferably 200~250 °C. When the melting point of the polymethylpentene-based resin is 200 ° C or more, the heat resistance of the textile yarn becomes good, which is preferable. On the other hand, when the melting point of the polymethyl pentene-based resin is 250° C. or lower, it is preferable to form a pulverizing workability when it is compounded with a thermoplastic resin by melt spinning. The melting point of the polymethylpentene resin is preferably from 210 to 245 ° C, particularly preferably from 220 to 240 ° C.

The polymethylpentene resin in the present invention may be added in times Various modifications are made to the desired additives. Specific examples of the secondary additive include a plasticizer, an ultraviolet absorber, an infrared absorber, a fluorescent whitening agent, a releasing agent, an antibacterial agent, a nucleating agent, a heat stabilizer, an antioxidant, and an antistatic agent. , colorants, conditioners, matting agents, defoamers, preservatives, gelling agents, latexes, fillers, inks, coloring materials, dyes, pigments, perfumes, etc., are not subject to these limitations. These secondary additives may be used singly or in combination.

The polymethylpentene fiber used in the present invention may also contain A thermoplastic resin having a different polymethylpentene resin (hereinafter sometimes referred to simply as a thermoplastic resin). The polymethylpentene-based resin is a resin having high transparency and a low refractive index, and it is preferred to impart coloring property to the polymethylpentene fiber by dyeing the thermoplastic resin.

The thermoplastic resin in the present invention is as long as it can be melted Spinning and compounding with a polymethylpentene-based resin can be dyed by a dye, and is not particularly limited, and can be suitably employed. Specific examples of the thermoplastic resin include polyester, polyamide, and thermoplastic polyacrylonitrile. Thermoplastic polyurethanes, modified polyolefins, polyvinyl chlorides, cellulose derivatives, etc., are not limited by these. Among them, polyester or polyamine is excellent in mechanical properties and good in color developability, and can be suitably used. Further, the thermoplastic resin may be used alone or in combination of plural kinds.

Specific examples of the polyester include polyethylene terephthalate. Aromatic polyester such as diester, polytrimethylene terephthalate, polybutylene terephthalate or polybutylene terephthalate, polylactic acid, polyglycolic acid, polyethylene adipate Ester, polypropylene adipate, polybutylene adipate, polyethylene succinate, polybutyl succinate, polybutyl succinate, polyethylene sebacate, An aliphatic polyester such as poly(arylene dicarboxylate), polybutylene adipate or polycaprolactone, or a copolymerized polyester in which a polyester is copolymerized with such a polyester, but is not affected by such Limited. Among them, polylactic acid can be suitably used because of its low refractive index and high color rendering property during dyeing.

Specific examples of the copolymerization component of the polyester include benzene. Dicarboxylic acid, isophthalic acid, terephthalic acid, sodium 5-sulfoisophthalate, 1,5-naphthalene dicarboxylic acid, 2,6-naphthalene dicarboxylic acid, 2,2'-biphenyldicarboxylic acid , an aromatic dicarboxylic acid such as 3,3'-biphenyldicarboxylic acid, 4,4'-biphenyldicarboxylic acid or stilbene dicarboxylic acid, malonic acid, fumaric acid, maleic acid, succinic acid, Itaconic acid, adipic acid, azelaic acid, sebacic acid, 1,11-undecanedicarboxylic acid, 1,12-dodecanedicarboxylic acid, 1,14-tetradecanedicarboxylic acid, 1 Aliphatic groups of 18-octadecanedicarboxylic acid, 1,2-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, dimer acid, and the like Dicarboxylic acid, aromatic diol such as catechol, naphthalenediol, bisphenol, ethylene glycol, trimethylene glycol, tetramethylene glycol, hexamethylene glycol, diethylene glycol, polyethyl b Aliphatic diols such as diol, polypropylene glycol, neopentyl glycol, and cyclohexane dimethanol, etc., are not limited by these . These copolymerization components may be used alone or in combination of two or more.

Specific examples of polyamines include nylon 6T and nylon. 9T, nylon 10T and other aromatic polyamides, nylon 4, nylon 6, nylon 11, nylon 12, nylon 46, nylon 410, nylon 66, nylon 610 and other aliphatic polyamines, such as polyamine The copolymerized polyamine or the like having a copolymerization component is polymerized, but is not limited thereto.

Specific examples of the copolymerization component of polyamine include aromatic diamines such as m-phenylenediamine, p-phenylenediamine, m-xylylenediamine, and p-xylylenediamine, and 1,2 - ethylenediamine, 1,3-trimethylenediamine, 1,4-tetramethylenediamine, 1,5-pentamethylenediamine, 2-methyl-1,5-pentamethylenediamine, 1 ,6-hexamethylenediamine, 1,7-heptethylenediamine, 1,8-octamethyldiamine, 1,9-nonamethylenediamine, 2-methyl-1,8-octa Methyldiamine, 1,10-decethylenediamine, 1,11-undecethyleneaminodiamine, 1,12-dodeethylenediamine, 1,13-tridecylenediamine, 1 ,16-hexadesethylenediamine, 1,18-octadecylenediamine, 2,2,4-trimethylhexamethylenediamine, piperazine , an aliphatic diamine such as cyclohexanediamine, and phthalic acid, isophthalic acid, terephthalic acid, sodium 5-sulfoisophthalate, 1,5-naphthalene dicarboxylic acid, 2,6-naphthalene Aromatic dicarboxylic acid, C, such as dicarboxylic acid, 2,2'-biphenyldicarboxylic acid, 3,3'-biphenyldicarboxylic acid, 4,4'-biphenyldicarboxylic acid, stilbene dicarboxylic acid Diacid, fumaric acid, maleic acid, succinic acid, itaconic acid, adipic acid, sebacic acid, sebacic acid, 1,11-undecanedicarboxylic acid, 1,12-dodecanedicarboxylate Acid, 1,14-tetradecanedicarboxylic acid, 1,18-octadecanedicarboxylic acid, 1,2-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,4- The aliphatic dicarboxylic acid such as cyclohexanedicarboxylic acid or dimer acid is not limited thereto. These copolymerization components may be used alone or in combination of two or more.

As the thermoplastic polyacrylonitrile, acrylonitrile and copolymerization are mentioned. Synthetic copolymer.

Specific examples of the copolymerization component of the thermoplastic polyacrylonitrile Examples thereof include acrylates such as methyl acrylate, ethyl acrylate, propyl acrylate, and butyl acrylate; methyl methacrylate, ethyl methacrylate, propyl methacrylate, and butyl methacrylate; Vinyl amide, vinyl acetate, etc. of halogenated olefins such as acrylate, vinyl chloride, vinyl fluoride, vinylidene chloride and vinylidene fluoride, acrylamide, methacrylamide, vinylpyrrolidone, etc. Vinyl esters such as vinyl propionate, vinyl aromatic compounds such as styrene and vinyl pyridine, vinyl carboxylic acids such as acrylic acid and methacrylic acid, p-styrenesulfonic acid, allylsulfonic acid, and methylene Vinyl sulfonic acid such as propyl sulfonic acid, sodium acrylate, sodium methacrylate, sodium p-styrene sulfonate, sodium allyl sulfonate, sodium methallyl sulfonate or vinyl Salts of sulfonic acids, etc., are not limited by these. These copolymerization components may be used alone or in combination of two or more.

Specific examples of the thermoplastic polyacrylonitrile include propylene. Nitrile-methyl acrylate copolymer, acrylonitrile-ethyl methacrylate copolymer, acrylonitrile-vinyl chloride copolymer, acrylonitrile-acrylamide copolymer, acrylonitrile-vinyl acetate copolymer, acrylonitrile-styrene Copolymer, acrylonitrile-acrylic acid copolymer, acrylonitrile-sodium methacrylate copolymer, etc., are not limited by these.

As a thermoplastic polyurethane, it can be exemplified by two different A polymer compound obtained by the reaction of three components of a cyanate ester, a polyhydric alcohol, and a chain extender.

As a specific example of a diisocyanate, a trimethylene group is mentioned. Diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, 1,3-bis(isocyanatemethyl)cyclohexane, 1,4-bis(isocyanatemethyl) Cyclohexane, 1,3-cyclohexane diisocyanate, 1,4-cyclohexane diisocyanate, 2,2'-diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate, 4, 4'-diphenylmethane diisocyanate, 1,5-naphthalene diisocyanate, 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, diphenylmethane diisocyanate, etc., but are not limited thereto.

Examples of the polyhydric alcohol include polyether polyols and polyester polyols. Alcohol, polycaprolactone polyol, polycarbonate polyol, etc., but are not limited by these. The polyether polyol is obtained by ring-opening addition polymerization of a low molecular weight polyol or a low molecular weight polyamine with an alkylene oxide. The polyester polyol is obtained by a condensation reaction or a transesterification reaction of a low molecular weight polyol with a polyvalent carboxylic acid, a polycarboxylic acid ester, a polycarboxylic acid anhydride, or a polycarboxylic acid halide. The polycaprolactone polyol is obtained by ring-opening polymerization of a low molecular weight polyol and caprolactone. Polycarbonate polyols are obtained by addition polymerization of a low molecular weight polyol and a carbonate.

Specific examples of the low molecular weight polyol include ethylene Alcohol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, cyclohexanediol, cyclohexanedimethanol, bisphenol, two Ethylene glycol, dipropylene glycol, glycerin, trimethylolpropane, pentaerythritol, diglycerin, xylitol, sorbitol, mannitol, sucrose dipentaerythritol, etc., are not limited by these. Specific examples of the low molecular weight polyamine include ethylenediamine, 1,3-propanediamine, 1,4-butanediamine, and 1,6-hexamethylenediamine. 1,4-cyclohexanediamine, hydrazine, etc., but are not limited by these. Specific examples of the alkylene oxide include ethylene oxide, propylene oxide, butylene oxide, tetrahydrofuran, and the like, but are not limited thereto. Specific examples of the polyvalent carboxylic acid include oxalic acid, malonic acid, fumaric acid, maleic acid, succinic acid, itaconic acid, adipic acid, phthalic acid, isophthalic acid, and terephthalic acid. Dimer acid, etc., but not limited by these. Specific examples of the polyvalent carboxylic acid ester include methyl esters and ethyl esters of polyvalent carboxylic acids, but are not limited thereto. Specific examples of the polyvalent carboxylic acid anhydride include oxalic anhydride, succinic anhydride, maleic anhydride, phthalic anhydride, and trimellitic anhydride, but are not limited thereto. Specific examples of the polyvalent carboxylic acid halide include oxalic acid dichloride and adipic acid dichloride, but are not limited thereto. Specific examples of the caprolactone include ε-caprolactone, but are not limited thereto. Specific examples of the carbonate include ethyl carbonate, dimethyl carbonate, and the like, but are not limited thereto.

Specific examples of the chain extender include ethylene glycol and 1,2- Propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, diethylene glycol, dipropylene glycol, etc., are not limited by these.

Modified polyolefin can be suitably synthesized by α-olefin and copolymerization Copolymer. The form of the copolymer may, for example, be a block copolymer or a graft copolymer, but is not limited thereto.

The α-olefin has a carbon number of preferably 2 to 20, and the molecular chain of the α-olefin It may be linear or branched. Specific examples of the α-olefin include ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, and 1-fourteen. Alkene, 1-hexadecene, 1-octadecene, 1-eicosene, 3-methyl-1-butene, 3-methyl-1-pentene, 4-methyl-1-pentene, 3-ethyl 1-pentene, 3-ethyl-1-hexene, etc., but are not limited by these. These α-olefins may be used alone or in combination of two or more.

As a copolymerized component of the modified polyolefin, it can be suitably used An unsaturated compound containing a polar functional group having high affinity with a dye is used. Examples of the polar functional group having high affinity for dyes include a carboxylic acid group, a carboxylic acid anhydride group, a carboxylate group, a carboxylate group, and a carboxylic acid guanamine group. Specific examples of the copolymerization component of the modified polyolefin include unsaturated carboxylic acids such as maleic acid, fumaric acid, itaconic acid, acrylic acid, and methacrylic acid, and unsaturated groups such as maleic anhydride and itaconic anhydride. Unsaturated carboxylate such as carboxylic anhydride, sodium methacrylate or sodium acrylate, vinyl acetate, vinyl propionate, methyl acrylate, ethyl acrylate, methyl methacrylate, monoethyl maleate, etc. Unsaturated guanamines such as saturated carboxylic acid esters, acrylamide, and monodecylamine maleate are not limited by these. These copolymerization components may be used alone or in combination of two or more.

Specific examples of the modified polyolefin include ethylene-Malay Acid copolymer, ethylene-fumaric acid copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-acrylic acid-sodium methacrylate copolymer, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate Copolymer, acrylic grafted polyethylene, maleic anhydride grafted polyethylene, maleic anhydride grafted polypropylene, maleic anhydride grafted ethylene-propylene copolymer, acrylic grafted ethylene-propylene copolymer, maleic acid graft Ethylene-propylene-norbornadiene copolymer, acrylic grafted ethylene-vinyl acetate copolymer, etc., but are not limited by these.

Polyvinyl chloride can be a homopolymer of vinyl chloride or chlorine. a copolymer of ethylene and a copolymerized component.

Specific examples of the copolymerization component of polyvinyl chloride include Acrylates such as vinyl acetate, propyl acrylate, etc., acrylates such as propyl acrylate and butyl acrylate, and olefins such as ethylene and propylene are not limited thereto. These copolymerization components may be used alone or in combination of two or more.

Cellulose derivative is a constituent unit of cellulose A compound in which at least a portion of the three hydroxyl groups present are derivatized to other functional groups. For example, a cellulose ester having one type of ester group bonded to cellulose, a cellulose mixed ester having two or more types of ester groups bonded thereto, and a cellulose ether having one type of ether group bonded thereto may be mentioned. Further, the cellulose mixed ether having two or more kinds of ether groups and one or two or more kinds of cellulose ether esters each having an ether group and an ester group bonded thereto are not limited thereto. The degree of substitution of the cellulose derivative is not particularly limited and may be appropriately selected depending on the melt viscosity, thermoplasticity, or the like. Further, when the cellulose derivative does not exhibit thermoplasticity, a plasticizer may be added to the cellulose derivative for the purpose of improving thermal fluidity.

Specific examples of the cellulose derivative include cellulose acetate fiber Cellulose acetate, cellulose propionate, cellulose butyrate, cellulose valerate, cellulose stearate, cellulose acetate propionate, cellulose acetate butyrate, cellulose acetate valerate, acetic acid Cellulose mixed ester of acid cellulose, cellulose propionate butyrate, cellulose acetate propionate butyrate, methyl cellulose, ethyl cellulose, propyl cellulose, hydroxymethyl cellulose, hydroxyethyl fiber Cellulose ether, hydroxypropyl cellulose, carboxymethyl cellulose, etc., methyl ethyl cellulose, methyl propyl cellulose, ethyl propyl cellulose, methylol methyl cellulose, hydroxy Methyl ethyl cellulose, hydroxypropyl Cellulose mixed ether of methyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, methyl cellulose acetate, methyl cellulose propionate, ethyl cellulose acetate Ester, ethyl cellulose propionate, propyl cellulose acetate, propyl cellulose propionate, hydroxymethyl cellulose acetate, hydroxymethyl cellulose propionate, hydroxyethyl cellulose Fibers such as acid esters, hydroxyethyl cellulose propionate, hydroxypropyl cellulose acetate, hydroxypropyl cellulose propionate, carboxymethyl cellulose acetate, carboxymethyl cellulose propionate, etc. Ethyl ether esters, etc., but are not limited by these.

Polymethylpentene in polymethylpentene fibers used in the present invention The compounding ratio of the olefinic resin to the thermoplastic resin can be appropriately selected according to the use or desired characteristics, but the polymethyl group in the polymethylpentene fiber is not damaged in order to impair the excellent lightness of the polymethylpentene resin. The pentene resin must be compounded in a range of 60% by weight or more. When the polymethylpentene-based resin is regarded as (A) and the thermoplastic resin is regarded as (B), the composite ratio (weight ratio) A/B of (A) to (B) is preferably 80/20 to 99/ 1. When the compounding ratio of the polymethylpentene-based resin is in the above range, it is preferable to impart coloring property to the polymethylpentene fiber by a thermoplastic resin while maintaining particularly excellent lightness. On the other hand, when the composite ratio of the polymethylpentene-based resin is 99% by weight or less, that is, the composite ratio of the thermoplastic resin is 1% by weight or more, the thermoplastic resin having high color rendering property is dispersed in the refractive index according to the composite ratio. Among the low polymethylpentene resins, it is preferred because it can achieve vivid and deep color development. The composite ratio (weight ratio) of the polymethylpentene resin (A) to the thermoplastic resin (B) is preferably A/B = 85/15 to 97/3, and particularly preferably A/B = 90/10 to 95. /5. Further, when a plurality of thermoplastic resins are used in combination, the composite ratio is determined by using the sum of these as the thermoplastic resin (B).

In the present invention, a polymethylpentene resin and a thermoplastic tree are used. For the purpose of improving the adhesion of the interface of the fat or controlling the state of dispersion, a thermoplastic resin may be used as a compatibilizing agent (hereinafter sometimes referred to simply as a compatibilizing agent) in one part of the thermoplastic resin as needed. The compatibilizing agent can be appropriately selected depending on the type of the thermoplastic resin and the like. Further, the compatibilizing agent may be used singly or in combination.

As the compatibilizing agent in the present invention, the same fraction can be used. A thermoplastic resin containing both a hydrophobic component having high affinity for a highly hydrophobic polymethylpentene-based resin and a component having high affinity with a thermoplastic resin is contained in the product. Alternatively, a thermoplastic resin containing both a hydrophobic component having a high affinity for a polymethylpentene-based resin and a functional group capable of reacting with a thermoplastic resin in the same molecule can be used.

Specific examples of the hydrophobic component constituting the compatibilizing agent, Examples thereof include polyethylene, polypropylene, polymethylpentene, polystyrene, ethylene-propylene copolymer, ethylene-butene copolymer, propylene-butene copolymer, and styrene-ethylene-butylene-styrene copolymerization. Things, etc., are not subject to these restrictions.

Affinity with a thermoplastic resin constituting a compatibilizing agent Specific examples of the high component or the functional group capable of reacting with the thermoplastic resin include a carboxylic acid group, a carboxylic acid anhydride group, a carboxylate group, a carboxylate group, a carboxylic acid oxime group, an amine group, an imine group, Alkoxyalkylene, stanol, decyl ether, hydroxy, epoxy, etc., are not limited by these.

Specific examples of the compatibilizing agent include maleic acid modification. Polyethylene, maleic anhydride modified polypropylene, maleic anhydride modified polymethylpentene, epoxy modified polystyrene, maleic anhydride modified styrene-ethylene-butylene-styrene copolymer, amine group Modified styrene-ethylene-butylene-styrene Polymer, imine-modified styrene-ethylene-butylene-styrene copolymer, etc., but are not limited by these.

When a compatibilizing agent is used in the present invention, the amount thereof is preferably used. The ratio to the thermoplastic resin containing the compatibilizing agent is in the range of 0.1 to 30% by weight. When the amount of the compatibilizing agent used is 0.1% by weight or more, the effect of compatibilizing the polymethylpentene-based resin and the thermoplastic resin is obtained, and it is preferable to improve the yarn-making workability such as suppression of yarn breakage. On the other hand, when the amount of the compatibilizing agent used is 30% by weight or less, the fiber properties, appearance, and texture of the polymethylpentene-based resin or the thermoplastic resin can be maintained in the polymethylpentene fiber. The amount of the compatibilizing agent used is preferably from 0.5 to 20% by weight, particularly preferably from 1 to 10% by weight.

Polymethylpentene fiber used in the present invention, for color rendering For the purpose of imparting, it is also possible to add a raw material dyed fiber such as a pigment or a coloring material to the polymethylpentene-based resin as needed. The pigment or the coloring material may be used singly or in combination of plural kinds.

Specific examples of the pigment or the coloring material in the present invention include inorganic pigments such as carbon black, cobalt blue, and chrome yellow, azo, anthocyanine, quinophthalone, anthraquinone, and Organic pigments, etc., etc., are not limited by these.

The amount of the pigment or coloring material added in the present invention is preferably 0.2 to 10% by weight in the polymethylpentene fiber. When the amount of the pigment or the coloring matter added is 0.2% by weight or more, it is preferable to impart sufficient color rendering properties to the polymethylpentene fibers. On the other hand, when the amount of the pigment or the coloring material to be added is 10% by weight or less, the occurrence of yarn breakage is small, and the yarn-forming workability is good, and the fiber properties of the obtained polymethylpentene fiber are also good and preferable. . The amount of the pigment or coloring material added is more preferably from 0.5 to 8.5% by weight, particularly preferably from 1.0 to 7.0% by weight.

As a method of adding a pigment or a coloring material in the present invention, A pigment or a coloring material is added to the polymethylpentene-based resin, and a master batch is produced by melt-kneading using a biaxial extruder, followed by melt-spinning. Further, the melt-spinning may be carried out by blending a polymethylpentene-based resin with a pigment or a coloring material, but is not limited thereto.

The monofilament fineness of the polymethylpentene fiber used in the present invention is 2~20dtex. When the monofilament fineness of the polymethylpentene fiber is 2 dtex or more, the yarn breakage is small, the process passability is good, and the generation of fluff is small at the time of use, and the grade and durability are excellent. On the other hand, when the monofilament fineness of the polymethylpentene fiber is 20 dtex or less, the flexibility of the textile yarn and the fiber structure is not impaired. The monofilament fineness of the polymethylpentene fiber is preferably 2 to 15 dtex, and more preferably 2 to 10 dtex.

Average fiber length of polymethylpentene fibers used in the present invention The degree is preferably from 10 to 100 mm. When the average fiber length of the polymethylpentene fiber is 10 mm or more, when the yarn is formed into a woven fabric, the fibers are sufficiently entangled with each other to obtain sufficient strength, which is preferable. On the other hand, when the average fiber length of the polymethylpentene fiber is 100 mm or less, the process passability or workability is good. The average fiber length of the polymethylpentene fiber is preferably from 15 to 90 mm, particularly preferably from 20 to 80 mm. Further, the fiber lengths of the polymethylpentene fibers may be equal or different.

The cross-sectional shape of the polymethylpentene fiber used in the present invention is It is not particularly limited and may be appropriately selected according to the use or required characteristics, and may be a round cross section of a true circular shape or a non-circular cross section. As a non-circle Specific examples of the cross-section include a multilobal shape, a polygonal shape, a flat shape, an elliptical shape, a C shape, an H shape, an S shape, a T shape, a W shape, an X shape, a Y shape, etc., but are not subject to such limited. Further, the polymethylpentene fiber used in the present invention is preferably a solid fiber from the viewpoint of process passability or operability.

The strength of the polymethylpentene fiber used in the present invention is not The specific limitation can be appropriately selected depending on the use or the required characteristics, and is preferably 0.5 to 5.0 cN/dtex. The strength of the polymethylpentene fiber is preferably from a viewpoint of mechanical properties, and is preferably 0.5 cN/dtex or more. When the strength of the polymethylpentene fiber is 0.5 cN/dtex or more, the number of broken wires is small, the process passability is good, and the durability is excellent, which is preferable. The strength of the polymethylpentene fiber is preferably 0.7 to 5.0 cN/dtex, and more preferably 1.0 to 5.0 cN/dtex.

The elongation of the polymethylpentene fiber used in the present invention is not There are special restrictions, which can be appropriately selected according to the purpose or required characteristics, preferably 5 to 300%. When the elongation of the polymethylpentene fiber is 5% or more, the abrasion resistance of the textile yarn and the fiber structure is improved, the generation of the pile is small, and the durability is improved, which is preferable. On the other hand, when the polymethylpentene fiber is an unstretched yarn, when the elongation is 300% or less, the workability of elongation is good, and it is preferable to improve the mechanical properties by stretching. In addition, when the polymethylpentene fiber is an extended yarn, when the elongation is 40% or less, the dimensional stability of the textile yarn and the fiber structure is preferably improved. When the polymethylpentene fiber is an unstretched yarn, the elongation is preferably from 8 to 280%, more preferably from 10 to 250%. Further, when the polymethylpentene fiber is an extended yarn, the elongation is more preferably from 8 to 35%, particularly preferably from 10 to 30%.

Anti-initial stretching of polymethylpentene fibers used in the present invention The degree is not particularly limited and may be appropriately selected according to the use or required characteristics, and is preferably 10 to 100 cN/dtex. When the initial tensile strength of the polymethylpentene fiber is 10 cN/dtex or more, the processability and workability are good, and the mechanical properties are excellent. On the other hand, when the initial tensile strength of the polymethylpentene fiber is 100 cN/dtex or less, it is preferable because the flexibility of the textile yarn and the fiber structure is not impaired. The polymethylpentene fiber has an initial tensile resistance of preferably 15 to 80 cN/dtex, more preferably 20 to 60 cN/dtex.

The specific gravity of the polymethylpentene fiber used in the present invention is not The specific limitation can be appropriately selected depending on the type or composite ratio of the thermoplastic resin, the use, or the required characteristics, and is preferably 0.83 to 0.95. Since the specific gravity of the polymethylpentene-based resin is 0.83, it is lightweight even when it is compounded with a thermoplastic resin, and from this viewpoint, it is preferably 0.95 or less. When the specific gravity of the polymethylpentene fiber is 0.95 or less, it is preferable to obtain a textile yarn which is compatible with the lightness of the polymethylpentene resin and the color rendering property by the thermoplastic resin. The specific gravity of the polymethylpentene fiber is preferably from 0.83 to 0.93, particularly preferably from 0.83 to 0.90.

The polymethylpentene fiber used in the present invention may also have a crimp . By having a crimp, it is preferable that the fibers are entangled with each other when they become a woven yarn, and a feeling of bulkiness and a light weight can be obtained.

The number of crimps of the polymethylpentene fibers used in the present invention is not There are special restrictions, which can be appropriately selected according to the use or required characteristics, preferably 2 to 40 peaks / 25 mm. If the number of crimps of the polymethylpentene fibers is 2 peaks/25 mm or more, the fibers become complex with each other when they become textile yarns. It is strong, and it is preferable to impart bulkiness to the textile yarn and the fiber structure. On the other hand, when the number of crimps of the polymethylpentene fiber is 40 peaks/25 mm or less, it is preferable because the process passability and workability are good, and the bulkiness of the textile yarn and the fiber structure is not impaired. The crimping number of the polymethylpentene fiber is preferably 4 to 30 peaks/25 mm, and more preferably 6 to 20 peaks/25 mm.

The crimping rate of the polymethylpentene fiber used in the present invention is not There are special restrictions, which can be appropriately selected according to the purpose or required characteristics, preferably 5 to 40%. When the crimping ratio of the polymethylpentene fiber is 5% or more, it is preferable that the fibers are entangled with each other when the woven yarn is formed, and the bulk of the textile yarn and the fiber structure can be imparted. On the other hand, when the crimping ratio of the polymethylpentene fiber is 40% or less, it is preferable because the process passability and workability are good, and the bulkiness of the textile yarn and the fiber structure is not impaired. The crimping rate of the polymethylpentene fiber is preferably from 8 to 35%, particularly preferably from 10 to 30%.

Next, the textile yarn of the present invention will be described.

The textile yarn of the present invention has a number of turns of T (back/25.4 mm), When the British cotton count is N, the enthalpy coefficient K calculated by the following formula (I) is 1.3 to 6.5.

(I)K=T÷N ^1/2

When the enthalpy coefficient K is 1.3 or more, since the fibers are largely entangled when they are used as the woven yarn, the generation of fluff is small at the time of use, and the durability is excellent. On the other hand, when the twist factor is 6.5 or less, the texture is not excessively hard, and the flexibility of the textile yarn and the fiber structure is not impaired. The 捻 coefficient K can be appropriately selected according to the use or the required characteristics of the textile yarn, preferably 2.0 to 5.5, more preferably 2.5 to 5.0, and particularly preferably 3.0 to 4.5.

The number of turns of the textile yarn of the present invention is not particularly limited. It can be suitably selected according to the use or required characteristics, preferably 5 to 75 times / 25.4 mm. When the number of turns of the textile yarn is 5 times / 25.4 mm or more, since the fibers are entangled when they are used as the woven yarn, the generation of the pile is small, and the durability is excellent, which is preferable. On the other hand, if the number of turns of the textile yarn is 75 times / 25.4 mm or less, the hand feel is not too hard, and the flexibility of the textile yarn and the fiber structure is not impaired. The number of yarns of the textile yarn is preferably 10 to 50 times / 25.4 mm, and particularly preferably 15 to 30 times / 25.4 mm.

The textile yarn of the present invention may also be composed only of polymethylpentene fibers. It can also be blended with chemical fibers or natural fibers. Further, it is also possible to combine a textile yarn with a textile yarn made of chemical fiber or natural fiber. Further, the chemical fiber or the natural fiber used for blending or kneading may be used singly or in combination of plural kinds.

The chemical fiber system in the present invention is not particularly limited, and According to the use or characteristics required to choose. Specific examples of the chemical fiber include polyester fiber, polyamide fiber, polyacrylonitrile fiber, cellulose fiber, and cellulose fiber, but are not limited thereto. Among them, polyester fibers, polyamido fibers, polyacrylonitrile fibers, cellulose fibers, and the like are preferable.

Specific examples of the polyester fiber include polyparaphenylene Ethylene formate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, etc., and specific examples of the polyamidated fiber include nylon 6, nylon 66, nylon 610, and the like. Specific examples of the polyacrylonitrile-based fiber include an acrylonitrile-methyl acrylate copolymer and an acrylonitrile-ethyl methacrylate copolymer. Specific examples of the cellulose-based fiber include a cellulose fiber. Examples of the cellulose fibers, such as cellulose diacetate, cellulose triacetate, cellulose acetate propionate, and cellulose acetate butyrate, may be exemplified by mucus bismuth or cuprous ammonia, but are not limited thereto. .

The natural fiber system in the present invention is not particularly limited, and According to the use or characteristics required to choose. Specific examples of the natural fiber include cotton, crepe, hemp, wool, and the like, but are not limited thereto.

Polymethylpentene fiber and chemistry in the textile yarn of the invention The blending ratio (weight ratio) of the fiber or the natural fiber is not particularly limited and may be appropriately selected according to the use or desired characteristics, but the polymethylpentene fiber is regarded as (A), and the chemical fiber or natural fiber is regarded as ( In the case of B), the blend ratio (weight ratio) of (A) and (B) is preferably A/B = 85/15 to 97/3. When the blending ratio of the polymethylpentene fibers is 85% by weight or more, it is preferable because the weight of the textile yarn is not impaired. On the other hand, when the blend ratio of the polymethylpentene fibers is 97% by weight or less, that is, the blend ratio of the chemical fibers or the natural fibers is 3% by weight or more, the texture of the chemical fiber or the natural fiber can be imparted to the textile yarn. Preferably. The blend ratio (weight ratio) of the polymethylpentene fiber (A) to the chemical fiber or the natural fiber (B) is more preferably A/B = 90/10 to 95/5.

Chemical fiber or natural fiber in the textile yarn of the present invention The melting point or decomposition temperature is preferably as high as possible from the viewpoint of heat resistance, and is preferably 200 ° C or more. In the present invention, in the case where the chemical fiber or the natural fiber exhibits a clear melting point, the melting point is used as an index of heat resistance, and in the case where a clear melting point is not displayed, the decomposition temperature is used as an index of heat resistance. The melting point or decomposition temperature of chemical fiber or natural fiber is 200 ° C or higher Further, since the heat resistance is excellent, an iron can be used, and it is preferably used for use in high-temperature use in addition to general clothing use. The melting point or decomposition temperature of the chemical fiber or the natural fiber is more preferably 210 ° C or more, and particularly preferably 220 ° C or more.

The British cotton count system of the textile yarn of the present invention has no special The restriction may be appropriately selected according to the use or the required characteristics, and is preferably from 1 to 200 counts. When the number of British cottons of the textile yarn is one or more, it is preferable because the flexibility of the textile yarn and the fiber structure is not impaired. On the other hand, when the number of British cottons of the textile yarn is 200 or less, the number of broken yarns during processing is small, the process passability is good, and the generation of fluff is small during use, and the durability is excellent. The English cotton count of the textile yarn is preferably 10 to 150 counts, and particularly preferably 20 to 100 counts.

The strength of the textile yarn of the present invention is not particularly limited. It can be suitably selected according to the use or required characteristics, and is preferably 0.5 to 5.0 cN/dtex. The strength of the textile yarn is preferably as high as from the viewpoint of mechanical properties, and is preferably 0.5 cN/dtex or more. When the strength of the textile yarn is 0.5 cN/dtex or more, the yarn breakage is small, the process passability is good, and the durability is excellent. The strength of the textile yarn is preferably 0.7 to 5.0 cN/dtex, and more preferably 1.0 to 5.0 cN/dtex.

The elongation of the textile yarn of the present invention is not particularly limited. It can be suitably selected according to the use or required characteristics, preferably 5 to 100%. When the elongation of the textile yarn is 5% or more, the abrasion resistance of the textile yarn and the fiber structure is improved, the generation of the pile is small, and the durability is good, which is preferable. On the other hand, when the elongation of the textile yarn is 100% or less, it is preferable that the dimensional stability of the textile yarn and the fiber structure becomes good. . The elongation of the textile yarn is preferably from 8 to 80%, more preferably from 10 to 40%.

The initial tensile strength of the textile yarn of the present invention is not particularly The limitation can be appropriately selected according to the use or the required characteristics, and is preferably 10 to 100 cN/dtex. When the initial tensile strength of the textile yarn is 10 cN/dtex or more, the process passability and workability are improved, and the mechanical properties are excellent, which is preferable. On the other hand, when the initial stretch resistance of the textile yarn is 100 cN/dtex or less, it is preferable because the flexibility of the textile yarn and the fiber structure is not impaired. The initial tensile strength of the textile yarn is preferably 15 to 80 cN/dtex, and particularly preferably 20 to 60 cN/dtex.

The apparent specific gravity of the textile yarn of the present invention is not particularly limited. The system can be suitably selected according to the type or blending ratio of the chemical fiber or the natural fiber, the use or the required characteristics, and is preferably 0.83 to 1.2. The apparent specific gravity of the textile yarn is preferably as small as possible from the viewpoint of light weight, and is preferably 0.83 or more. When the apparent specific gravity of the textile yarn is 0.83 or more, the weight of the textile yarn is not impaired, and the texture of the chemical fiber or the natural fiber can be preferably imparted to the polymethylpentene fiber having excellent light weight. The apparent proportion of the textile yarn is preferably 0.83 to 1.15, and particularly preferably 0.83 to 1.1.

The textile yarn of the present invention can be used for weaving or knitting. The fibers are treated in the same manner, and when they are formed into a fiber structure, they can be combined by interlacing or interlacing the textile yarn of the present invention with other fibers.

The morphology of the fibrous structure comprising the textile yarn of the present invention There is no particular limitation, and it can be a woven fabric, a knitted fabric, a pile fabric, a non-woven fabric, or the like according to a well-known method. Further, the fibrous structure comprising the textile yarn of the present invention may be any woven or braided structure, and may suitably be woven with plain weave, twill weave, satin weave or the like, or Warp knitting, weft knitting, round knitting, lace knitting or such changes.

Next, a method of producing the textile yarn of the present invention will be described.

The textile yarn of the present invention can be obtained by melt-spinning, obtaining a polymethylpentene fiber from a raw material such as a polymethylpentene resin or the thermoplastic resin by melt spinning, and then stretching, crimping, and cutting. The steps of breaking, woollen, worsted, etc. are not limited by these.

In the present invention, it is preferred to dry the polymethylpentene-based resin and the thermoplastic resin before melt-spinning, and firstly, the water content is 0.3% by weight or less. When the water content is 0.3% by weight or less, it is not foamed by moisture at the time of melt spinning, and it is preferable because it can be stably spun. The water content is more preferably 0.2% by weight or less, and particularly preferably 0.1% by weight or less.

As a method of melt spinning, a well-known method can be suitably employed for each of the single component spinning and the composite spinning. The method of combining a polymethylpentene-based resin with a thermoplastic resin by melt spinning may be a core-sheath type composite spinning, an island-in-the-sea type composite spinning, or a polymer alloy type spinning, but is not affected by this. Etc.

In the core-sheath type composite spinning, it can be suitably employed: after the respective chips are dried as needed, the melt spinning machine such as an extruder type or a pressure melting machine type is supplied with chips, and the core is supplied. The components and the sheath components are each melted separately and metered by a metering pump. Then, it is introduced into a spinning pack which is heated in a spin block, and after the molten polymer is filtered in the spin pack, the core component and the sheath component are merged in the core-sheath type composite spinning nozzle to become The core-sheath structure is a method of spouting from a spinning nozzle to form a fiber strand. About island-type composite spinning, in addition to sea components Each of the island components is melted separately, and the sea-island type composite spinning nozzle is used to form a sea-island structure. The same method as the core-sheath type composite spinning can be suitably employed.

As a self-spinning spray for polymer alloy spinning The method of discharging the mouth and forming the fiber strands is exemplified by the following examples, but is not limited thereto. In the first example, the polymethylpentene-based resin and the thermoplastic resin are melt-kneaded and compounded in advance in an extruder or the like, and the chips are dried as needed, and then the chips are supplied to the melt-spinning. The machine is melted and metered by a metering pump; then, it is introduced into a spinning pack which is heated in the spin block, and the molten polymer is filtered in the spinning pack, and then spun out from the spinning nozzle to form a fiber strand. As a second example, the chips are dried as needed, and the polymethylpentene-based resin and the thermoplastic resin are mixed in a state of chips, and the mixed chips are supplied to a melt spinning machine to be melted, and a metering pump is used. Measurement. Then, it is introduced into a spin pack which is heated in the spin block, and the molten polymer is filtered in the spin pack, and then spun from the spinning nozzle to form a fiber strand.

a fiber strand spun from a spinning nozzle, even in a single component In either case of spinning, core-sheath type composite spinning, island-in-the-sea composite spinning, or polymer alloy spinning, cooling can be cooled by a cooling device and pulled by a roll. Further, in order to improve the woven handling property, the productivity, and the mechanical properties of the fiber, a heating cylinder or a heat insulating cylinder having a length of 2 to 20 cm may be provided in the lower portion of the spinning nozzle as needed. Further, the fiber strands may be oiled using an oil supply device, or the fiber strands may be entangled using an interlacing device.

The spinning temperature of melt spinning, according to polymethylpentene The melting point or heat resistance of the resin and the thermoplastic resin are appropriately selected, and it is preferably 220 to 320 °C. When the spinning temperature is 220 ° C or higher, the elongational viscosity of the fiber strands discharged from the spinning nozzle is sufficiently lowered to discharge the stability, and the spinning tension is not excessively increased, so that the yarn breakage can be suppressed. . On the other hand, when the spinning temperature is 320 ° C or lower, thermal decomposition at the time of spinning can be suppressed, and the obtained polymethylpentene fiber is preferably inferior in mechanical properties or coloring. The spinning temperature is preferably 240 to 300 ° C, and particularly preferably 260 to 280 ° C.

The spinning speed of melt spinning can be according to the spinning temperature or The monofilament fineness of the polymethylpentene fiber or the like is suitably selected, and is preferably 300 to 2500 m/min. When the spinning speed is 300 m/min or more, it is preferable because the traveling yarn is stabilized and the yarn breakage can be suppressed. On the other hand, when the spinning speed is 2,500 m/min or less, since the fiber yarn can be sufficiently cooled, stable spinning can be performed, which is preferable. The spinning speed is preferably 500 to 2000 m/min, and more preferably 1000 to 1500 m/min.

The method for extracting the spun yarn can be carried out by the first pulling roller The method of winding is carried out by a winder by the second pulling roller, but from the viewpoint of productivity, a method of accommodating the unstretched yarn in the storage container, that is, a so-called storage pulling method, can be suitably employed. Specifically, the fiber strands discharged from the plurality of spinning nozzles are guided by a plurality of roller groups, and are stored as a bundle of containers that are shaken off into a storage container such as a can.

The total fiber of the polymethylpentene fiber after the storage of the traction method The degree is not particularly limited and may be appropriately selected in accordance with the stretching ratio, the stretching speed, etc., preferably from 1,000 to 1,000,000 dtex. After storing the traction method When the total fineness of the polymethylpentene fiber is 1000 dtex or more, the number of broken wires is small, and the process passability is good. On the other hand, when the total fineness of the polymethylpentene fiber after the storage and pulling method is 1,000,000 dtex or less, it is preferable because the process passability and workability are good. The total fineness of the polymethylpentene fiber after the storage and traction method is preferably 5,000 to 700,000 dtex, and more preferably 10,000 to 500,000 dtex.

Undrawn yarn drawn by melt spinning, in order to obtain A textile yarn having the desired fiber characteristics can also be stretched. The method of stretching is not particularly limited, and according to a well-known method, a two-step method in which an unstretched yarn temporarily wound on a drum is extended, and a direct spinning extension method in which continuous stretching is performed without winding onto a drum can be cited. The unstretched yarn obtained by the storage and pulling method is subjected to a method of stretching and then extending, and is not limited thereto. From the viewpoint of productivity, a method of joining and stretching the undrawn yarn obtained by the storage drawing method can be suitably employed. Specifically, the unrestricted filaments are erected from the plurality of storage containers and are guided to the extending step.

The total fineness of the polymethylpentene fibers after the merging is not There are special restrictions, which may be appropriately selected according to the stretching ratio or the stretching speed, etc., preferably from 10,000 to 1,000,000 dtex. When the total fineness of the polymethylpentene fibers after the merging is 10,000 dtex or more, the number of broken wires is small, and the process passability is good. On the other hand, when the total fineness of the polymethylpentene fibers after the merging is 1,000,000 dtex or less, it is preferable because the process passability or workability is good. The total fineness of the polymethylpentene fibers after the merging is more preferably 50,000 to 700,000 dtex, and particularly preferably 100,000 to 500,000 dtex.

As the heating method in the extension, as long as it can travel The device in which the yarn is directly or indirectly heated is not particularly limited. Specific examples of the heating method include a heating roll, a hot needle, a hot plate, a laser, and the like, a liquid bath such as warm water or hot water, a gas bath such as hot air or steam, etc., but are not affected by such a method. Limited. These heating methods may be used singly or in combination. As the heating method, from the viewpoint of the control of the heating temperature, the uniform heating of the traveling yarn, and the uncomplicated device, the contact with the heating roller, the contact with the hot needle, and the contact with the hot plate can be suitably employed. Impregnated in a liquid bath such as warm water or hot water. Further, from the viewpoint of productivity, it is particularly preferred to be immersed in a liquid bath such as warm water or hot water.

The stretching ratio at the time of stretching can be appropriately selected in accordance with the strength or elongation of the textile yarn made of polymethylpentene fibers, and is preferably 1.02 to 7.0 times. When the stretching ratio is 1.02 times or more, it is preferable to increase the mechanical properties such as strength or elongation of the polymethylpentene fiber by stretching. On the other hand, when the stretching ratio is 7.0 times or less, it is preferable because the yarn breakage during stretching can be suppressed and the stable stretching is performed. The stretching ratio is preferably 1.2 to 6.0 times, and particularly preferably 1.5 to 5.0 times. Further, it may be either a one-stage extension method or a two-stage extension method.

The elongation temperature at the time of stretching can be appropriately selected in accordance with the strength or elongation of the textile yarn made of polymethylpentene fibers, and is preferably 50 to 95 °C. When the elongation temperature is 50° C. or more, the preheating system supplied to the extended yarn is sufficiently performed, and the thermal deformation during stretching is uniform, and the occurrence of unevenness in fineness can be suppressed. On the other hand, when the elongation temperature is 95 ° C or less, it is preferable to suppress the breakage at the time of stretching and to perform stable extension. The extension temperature is preferably 55~90°C, especially 60~85°C. Moreover, heat setting at 50 to 150 ° C can be performed after the extension as needed.

The extension speed at the time of extension can be extended according to the method Or a stretching ratio or the like is suitably selected, and it is preferably 30 to 1000 m/min. When the stretching speed is 30 m/min or more, the traveling yarn is stable and preferable even if the total fineness of the unstretched yarn is large. On the other hand, when the elongation speed is 1000 m/min or less, it is preferable to suppress the breakage at the time of stretching and to perform stable extension. The extension speed is preferably 50 to 800 m/min, and more preferably 100 to 500 m/min.

In the present invention, before, after, and by the extension An oil agent may also be imparted to the polymethylpentene fibers in any of the subsequent steps or in the respective steps. By the imparting of the oil agent, since the dynamic friction coefficient of the fibers can be alleviated, the process passability or the workability is preferably improved in the stretching step or the spinning step.

In the present invention, any one from melt spinning to spinning In one step, it is preferred to impart a crimp to the polymethylpentene fibers. For example, the crimping may be imparted before or during the extension of the plurality of stretches, but from the viewpoint of elongation or fiber properties obtained, it is preferred to impart crimp after stretching.

There are no special restrictions on the method of giving curls. The well-known method includes a stuffer box method, a press-in heating gear method, a high-speed air jet press method, and the like, but is not limited thereto. If necessary, steam heating may be performed at the time of crimping, or heat setting or drying may be performed after crimping. Further, in the melt spinning step, the cooling wind may be blown by one side of the fiber yarn spun from the spinning nozzle to perform non- Symmetrical cooling, while giving curling. The temperature of the cooling air may be suitably 20 to 30 ° C, and the wind speed may be 20 to 100 m / min.

The processing temperature at the time of crimping can be used according to the purpose or The characteristics are preferably selected, but in order to impart a stable crimp, it is preferably from 100 to 250 °C. When the treatment temperature is 100 ° C or more, the preheating of the yarn supplied to the crimp is sufficiently performed, and it is preferably thermally deformed when the crimp is applied. On the other hand, when the treatment temperature is 250 ° C or lower, the thermal decomposition of the polymethylpentene fibers can be suppressed when the crimping is applied, and the mechanical properties of the obtained textile yarn are not good or the coloring does not occur, which is preferable. The processing temperature at the time of crimping is preferably from 120 to 230 ° C, particularly preferably from 150 to 200 ° C.

There is no special limit to the method of cutting polymethylpentene fibers. The system can be exemplified by a known method, such as rotary cutting, cross cutting, etc., but is not limited thereto. Further, the polymethylpentene fiber may be cut into a fixed length or may be cut to have a fiber length distribution.

There are no special restrictions on the method of spinning, but according to the public. A well-known method uses a polymethylpentene fiber to obtain a textile yarn through a step of cotton, card, draw, wool, and worsted, but is not limited thereto.

In the present invention, polymethylpentene can be used for spinning The fibers are blended with chemical or natural fibers in the desired ratio. The method of blending is not particularly limited. According to a well-known method, in the step from cotton to card, the respective raw cottons are put into the respective series, and the strips are compounded in the drawing step ( The method of sliver), or the method of compounding a plurality of rovings or slivers in a spinning step, and the like, are not limited by these.

In the present invention, it is also possible to twist when spinning. plus There is no particular limitation on the method of the crucible. According to the well-known method, a pseudo-combustion method such as a ring, a flyer, a can, a spindle, a free end, etc., a wrapping method, an interactive spinning method, and the like can be cited. Insufficiency, such as wrap, paste, and fusion, are not subject to these restrictions.

The textile yarn obtained by the invention may also be combined with chemical fiber or A combination of natural fibers and textile yarns. The method of burning the filament is not particularly limited, and according to a well-known method, a pseudo-combustion method such as a ring, a flyer, a can, a spindle, a free end, etc., a wrapping method, an interactive filament method, or the like may be cited. The innocent method such as entanglement, paste-sticking method, and fusion-adhesive method are not limited by these. Further, the number of the yarns to be combined is not particularly limited, and may be appropriately selected in accordance with the fiber characteristics of the knitted yarn after the twisting, and is preferably 5 to 75 times / 25.4 mm. When the number of filaments to be twisted is 5 or more and 25.4 mm or more, the fibers constituting the textile yarn are largely entangled with each other, and the generation of fluff is small during use, and the durability is excellent. On the other hand, if the number of filaments to be twisted is 75 or less and 25.4 mm or less, the process passability is good, and the texture is not too hard, and the flexibility of the textile yarn and the fiber structure is not impaired. The number of filaments is preferably 10~50 times/25.4mm, especially 15~30 times/25.4mm.

Textile yarn of the invention and fiber structure comprising the textile yarn The dyeing method is not particularly limited, and a cheese dyeing machine, a liquid dyeing machine, a drum dyeing machine, a warp beam dyeing machine, a jigger, a high-pressure jigger, or the like can be suitably used according to a well-known method.

In the present invention, it may be a thermoplastic resin compounded with a polymethylpentene-based resin, or a chemical fiber or natural blended or blended. The type of fiber is suitable for dye selection. In the case of using any of the dyes, the polymethylpentene-based resin is hardly dyed, but by dyeing a thermoplastic resin, a chemical fiber, or a natural fiber, coloring property can be imparted to the textile yarn and the fiber structure. As the thermoplastic resin, when a polyester is used, a disperse dye can be suitably used, when a polydecylamine is used, an acid dye can be suitably used, and when a thermoplastic polyacrylonitrile is used, a cationic dye can be suitably used when a thermoplastic is used. In the case of a polyurethane, an acid dye can be suitably used, when a modified polyolefin is used, a cationic dye can be suitably used, and when a polyvinyl chloride is used, a disperse dye can be suitably used when a cellulose derivative is used. When appropriate, disperse dyes may be suitably employed, but are not limited by these. As the chemical fiber, when a polyester fiber is used, a disperse dye can be suitably used, and when a polyamido fiber is used, an acid dye can be suitably used, and when a polyacrylonitrile fiber is used, a cationic dye can be suitably used. When a cellulose-based fiber is used, a disperse dye can be suitably used, and when a cellulose fiber is used, a reactive dye or a direct dye can be suitably employed, but is not limited thereto. As the natural fiber, when cotton is used, a reactive dye or a direct dye can be suitably used, and when hydrazine is used, an acid dye can be suitably used, and when hemp is used, a reactive dye or a direct dye can be suitably used, when wool is used. Acid dyes may suitably be employed, but are not limited by these.

In the present invention, regarding dye concentration or dyeing temperature, and There is no particular limitation, and a well-known method can be suitably employed. Further, if necessary, it may be scoured before the dyeing process, and may be subjected to reduction washing after the dyeing process.

Textile yarn obtained by the present invention and fiber containing the same The structure is excellent in light weight, simultaneous heat retention, quick-drying property, and ironing heat resistance. Therefore, the general clothing use of women's wear, men's wear, lining, underwear, down, vest, shirt, inner coat, etc., sportswear for windbreaker, outdoor clothing, ski wear, golf apparel, swimwear, etc. Side, quilt cover, blanket, side cover for blanket, blanket cover, pillowcase, bed sheet, etc., use for tablecloths, curtains, tile rugs, household drapes, car mats, etc., belts, purses, stitches , sleeping bags, tents, ropes, maintenance nets, filter cloth, narrow tape, braids, chair covers, etc., but not limited by these.

[Examples]

Hereinafter, the present invention will be described in more detail by way of examples. Further, each characteristic value in the examples was obtained by the following method.

The properties of the raw materials and fibers of the polymethylpentene fibers were calculated by the method of A to K.

A. MFR

MFR (g/10 min) was measured using a polymethylpentene-based resin as a sample according to ASTM D1238-10 at a measurement temperature of 260 ° C and a load of 5.0 kg. In addition, the measurement system was performed three times for each sample, and the average value was taken as MFR.

B. Moisture content

The polymethyl pentene-based resin and the thermoplastic resin which were vacuum-dried were used as a sample, and the water content (ppm) was measured using a wet moisture measuring device AQ-2000 and a moisture gasification device EV-2000. After the sample was placed in a water vaporization apparatus, it was measured under the conditions of a temperature of the furnace of 180 ° C and a flow rate of dry nitrogen of 0.2 L/min. Furthermore, each measurement system The sample was taken 3 times, and the average value was taken as the water content.

C. Melting point

The melting point of the polymethylpentene resin and the thermoplastic resin was measured using a differential scanning calorimeter (DSC) DSC7 type manufactured by Perkin Elmer. About 10 mg of the sample was heated from 30 ° C to 280 ° C in a nitrogen atmosphere, and the temperature was raised at a temperature increase rate of 15 ° C / min, and then held at 280 ° C for 3 minutes to remove the thermal history of the sample. Then, from 280 ° C to 30 ° C, the temperature was lowered at a temperature drop rate of 15 ° C / min, and then held at 30 ° C for 3 minutes. Further, from 30 ° C to 280 ° C, the temperature was raised at a temperature increase rate of 15 ° C / minute, and the peak temperature of the endothermic peak observed during the second temperature rise was taken as the melting point (° C.). Further, the measurement system was carried out three times per sample, and the average value thereof was taken as the melting point.

D. Compound ratio

The composite ratio (weight ratio) was calculated from the weight of the polymethylpentene resin used as the raw material of the polymethylpentene fiber and the weight of the thermoplastic resin.

E. Proportion

In the specific gravity, the polymethylpentene fiber obtained in the examples was used as a sample, and it was calculated in accordance with JIS L1015:2010 (Chemical Fiber Short Fiber Test Method) 8.14.1 (Floating Method). In addition, the measurement system was performed three times for each sample, and the average value was taken as the specific gravity.

F. Average fiber length

The average fiber length (mm) is obtained by using the polymethylpentene fiber obtained in the examples as a sample according to JIS L1015:2010 (chemical fiber short fiber test method) 8.4.1 (short fiber length distribution method (method A)) Calculated. Again, measure Each sample was subjected to 20 times, and the average value was taken as the average fiber length.

G. Monofilament fineness

The monofilament fineness (dtex) was calculated by using the polymethylpentene fiber obtained in the example as a sample according to JIS L1015:2010 (Chemical Fiber Short Fiber Test Method) 8.5.1 (Method A). Further, the measurement system was carried out three times per sample, and the average value thereof was regarded as a single fiber fineness.

H. Strength, elongation

The strength (cN/dtex) and the elongation (%) were calculated by using the polymethylpentene fiber obtained in the examples as a sample according to JIS L1015:2010 (Chemical Fiber Short Fiber Test Method) 8.7.1. The tensile test was carried out using a Autograph AG-50 NISMS model manufactured by Shimadzu Corporation under the conditions of a jig interval of 20 mm and a tensile speed of 20 mm/min.

I. Resistance to initial stretch

The initial tensile strength (cN/dtex) was determined by using the polymethylpentene fiber obtained in the examples as a sample, and was calculated in accordance with JIS L1015:2010 (Chemical Fiber Short Fiber Test Method) 8.11. The measurement was carried out in the same manner as in the above-mentioned H, and the load-elongation curve was drawn. The maximum point of the change in the load with respect to the elongation change was obtained in the vicinity of the origin of the curve, and JIS L1015:2010 (chemical fiber short fiber test method) was used. The formula described in 8.11 calculates the initial tensile strength.

J. Number of crimps

The number of crimps (peak/25 mm) was calculated by using the polymethylpentene fiber obtained in the examples as a sample according to JIS L1015:2010 (Chemical Fiber Short Fiber Test Method) 8.12.1.

K. Contraction rate

The crimping ratio (%) was calculated by using the polymethylpentene fiber obtained in the example as a sample according to JIS L1015:2010 (Chemical Fiber Short Fiber Test Method) 8.12.2.

The fiber properties of the textile yarn are calculated by the method of L~S.

L. melting point or decomposition temperature

A chemical fiber or a natural fiber used as a raw material of the textile yarn is used as a sample, and the melting point is measured in the same manner as in the above C. When the sample does not show a clear melting point, the SEIKO INSTRUMENT thermogravimetric differential thermal analyzer (TG-DTA) is used. Model 6200 to determine the decomposition temperature. In an air atmosphere, a temperature of 10% of the sample was increased from 30 ° C to 500 ° C at a temperature increase rate of 10 ° C / min, and the temperature at which the weight of the sample was reduced by 10% was regarded as a decomposition temperature (° C.). In addition, the measurement system was performed three times for each sample, and the average value was taken as the decomposition temperature.

M. Blending ratio

The blending ratio (weight ratio) was calculated from the weight of the polymethylpentene fiber used as the raw material of the textile yarn and the weight of the chemical fiber or the natural fiber.

N. Apparent weight

Apparent specific gravity The textile yarn obtained in the examples was used as a sample, and was measured in the same manner as in the above E.

O. British cotton count

British cotton count (count) is the sample obtained from the textile yarn obtained in the example, according to JIS L1095:2010 (general textile yarn test method) 9.4.2 Out. Further, the measurement system was carried out three times per sample, and the average value thereof was regarded as a single fiber fineness.

P. Strength, elongation

The strength (cN) and the elongation (%) were calculated by using the textile yarn obtained in the examples as a sample according to JIS L1095:2010 (general textile yarn test method) 9.5.1 (standard time). The tensile test was carried out using a Autograph AG-50 NISMS model manufactured by Shimadzu Corporation under the conditions of a clamp interval of 50 cm and a tensile speed of 30 cm/min.

Q. Resistance to initial stretch

The initial tensile strength (cN/dtex) was calculated by using the textile yarn obtained in the example as a sample according to JIS L1095:2010 (general textile yarn test method) 9.13. The measurement was carried out in the same manner as in the above P, and the load-elongation curve was drawn. The maximum point of the change in the load with respect to the elongation change was obtained in the vicinity of the origin of the curve, and JIS L1095:2010 (general textile yarn test method) 9.13 was used. In the formula described above, the initial tensile strength was calculated.

R. Number of turns

The number of turns (back/25.4 mm) was calculated by using the textile yarn obtained in the examples as a sample according to JIS L1095:2010 (general textile yarn test method) 9.15.1 (method A).

S. 捻 coefficient

The 捻 coefficient K is calculated by the following formula using the number of turns T (back/25.4 mm) calculated by the above R and the number N of counts of the British cotton calculated by the above O.

The 捻 coefficient K=T÷N ^1/2 .

T. Number of fluff

The number of piles (10 m) was obtained by taking the textile yarn obtained in the example as a sample, and calculating it according to JIS L1095:2010 (general textile yarn test method) 9.22 (B method). The number of piles was measured using F-INDEX TESTER manufactured by Shimadzu Technology, and the sample length was 10 m and the wire speed was 30 m/min, and the number of piles of 3 mm or more was calculated. In addition, the measurement system was carried out 10 times per sample, and the average value was regarded as the number of piles.

The fabric characteristics of the textile yarn are calculated by the method of U~AF.

U. Apparent weight

The apparent specific gravity was determined by using the flat fabric obtained in the examples as a sample according to JIS L1096:2010 (Test method for fabrics of fabrics and knitted fabrics) 8.11. In addition, the measurement system was carried out three times for each sample, and the average value was taken as the apparent specific gravity.

V. Insulation rate

The heat retention rate (%) was determined by using the flat fabric obtained in the examples as a sample according to JIS L1096:2010 (Method for Testing Fabrics of Fabrics and Fabrics) 8.27.1 (Method A (Constant Temperature Method)).

W. Drying time

Drying time (minutes) The flat fabric obtained in the examples was used as a sample, and it was measured in accordance with JIS L1096:2010 (textile test method for woven fabrics and knitted fabrics) 8.25.

X. Ironing temperature

The flat fabric (15 cm × 15 cm) obtained in the examples was used as a sample, and the shape of the surface of the fabric was observed after touching the iron heated to the set temperature (Sanyo Electric Mechanism A-1F, surface pressure about 8 g/cm ² ) for 15 seconds. Variety. When no change was observed in the shape of the surface of the fabric, the maximum temperature at which the shape was not changed was regarded as the ironing temperature (° C.) each time the set temperature was raised by 10 ° C. Further, the set temperature of ironing was changed from 130 ° C to 210 ° C. Further, the measurement system was carried out three times per sample, and the average value thereof was taken as the ironing temperature.

Y. L* value

When the polymethylpentene fiber is compounded with a thermoplastic resin, or when the polymethylpentene fiber is blended with a chemical fiber or a natural fiber, the flat fabric obtained in the example is used as a sample, and is tempered at 70 ° C for 20 minutes. Thereafter, dry heat setting was carried out at 160 ° C for 2 minutes, and dyeing was carried out in accordance with a usual method. For the sample after dyeing, a MINOLTA spectrophotometer CM-3700d type was used, and the L* value was measured under a D65 light source, a viewing angle of 10°, and an optical condition of SCE (normal reflection light removal method). Further, the measurement system was carried out three times for each sample, and the average value thereof was regarded as an L* value. Further, when the raw liquid dyed fiber was used as the polymethylpentene fiber, the L* value was also measured in the same manner as described above. The specific dyeing method for each sample is as follows.

Use polylactic acid (PLA), polyethylene terephthalate (PET), polytrimethylene terephthalate (PPT), cellulose acetate propionate (CAP) as a thermoplastic resin, polyester fiber as a chemical fiber, and Kayalon Polyester made of a disperse dye in Japan Black EX-SF200, which added 8% by weight of a dye to a plain fabric, was dyed in a dyeing solution adjusted to a pH of 5.0 at a bath ratio of 1:100 and a dyeing time of 60 minutes. Further, the dyeing temperature was 100 ° C in the case of PLA, PPT, and CAP, and 130 ° C in the case of PET or polyester fiber.

Use nylon 6 (N6), nylon 66 (N66) as the thermoplastic tree Fat, when using wool as a natural fiber, use acid dye in the dye Kayak Milling Black TLB made by Nippon Kayaku. To the flat fabric, 8 wt% of the dye was added, and the dyeing liquid was adjusted to a pH of 4.5 in a dyeing liquid adjusted to 4.5 at a bath ratio of 1:100, a dyeing temperature of 100 ° C, and a dyeing time of 60 minutes.

Using polymethyl methacrylate (PMMA), maleic anhydride When a polypropylene (MPP) is used as a thermoplastic resin, Kayacryl Black YA made of a chemical dye is used as a dye. To the flat fabric, 8 wt% of the dye was added, and the dye was dyed in a dyeing solution adjusted to a pH of 4.0 at a bath ratio of 1:100, a dyeing temperature of 100 ° C, and a dyeing time of 60 minutes.

Use cellulose fiber as chemical fiber and cotton as In the case of natural fibers, Kayacion Black CF-BG manufactured by Nippon Kayaku Co., Ltd. is used as a dye. To the flat fabric, 8 wt% of the dye was added, and the dye was dyed in a dyeing solution adjusted to a pH of 11.0 at a bath ratio of 1:100, a dyeing temperature of 60 ° C, and a dyeing time of 60 minutes.

Z. Lightweight

The apparent specific gravity of the plain fabric calculated in the above U was regarded as an index of lightness. The apparent specific gravity "less than 0.25" is regarded as A, "0.25 or more and less than 0.30" is regarded as B, "0.30 or more and less than 0.35" is regarded as C, "0.35 or more" is regarded as D, and "0.25 or more is considered as " B or more of less than 0.30" is regarded as qualified.

AA. Thermal insulation

The heat retention rate of the flat fabric calculated in the above V was taken as an index of heat retention. The insulation rate "18% or more" is regarded as A, "14% or more and less than 18%" is regarded as B, "10% or more and less than 14%" is regarded as C, and "less than 10%" is regarded as D, B or more of "14% or more and less than 18%" is regarded as qualified.

AB. Quick drying

The drying time of the flat fabric calculated in the above W was taken as an index of quick-drying property. The drying time "less than 100 minutes" is regarded as A, "100 minutes or more and less than 300 minutes" is regarded as B, "300 minutes or more and less than 500 minutes" is regarded as C, and "500 minutes or more" is regarded as D, B or more of "100 minutes or more and less than 300 minutes" is regarded as qualified.

AC. Ironing heat resistance

The ironing temperature of the flat fabric calculated in the above X was taken as an index of ironing heat resistance. The ironing temperature "180 ° C or more and 210 ° C or less" is regarded as A, "160 ° C or more and 170 ° C or less" is regarded as B, "140 ° C or more and 150 ° C or less" is regarded as C, and "130 ° C or less" is regarded as " D, B or more of "160 ° C or more and 170 ° C or less" is regarded as qualified.

AD. Color rendering

The L* value of the plain fabric dyed in the above Y was taken as an indicator of color rendering. Treat L* value "less than 40" as A, "40 or more and less than 50" as B, "50 or more and less than 60" as C, "60 or more" as D, and "40 or more" B or more of less than 50" is considered as qualified.

AE. feel

For the plain fabric obtained from the examples, a functional test of a subject of 10 persons was carried out. In the functional test, the softness and taste of the plain fabric were evaluated by hand touch, and "excellent" was regarded as A, "excellent" was regarded as B, "ordinary" was regarded as C, and "poor" was regarded as "poor" D, take "excellent" B or above as qualified.

AF. Raising

The number of fluff of the textile yarn obtained from the examples is taken as an indicator of fluffing . The number of fluffs is "less than 30/10m" as A, and "30/10b and above and less than 50/10m" as B, and "50/10m and above and less than 70/10m" In the case of C, "70 /10 m or more" is regarded as D, and "30 /10 m or more and less than 50 /10 m" B or more is regarded as qualified.

(Example 1)

The pellet of polymethylpentene (PMP) ("DX820" by Mitsui Chemicals, melting point 232 ° C, MFR 180 g/10 min) was vacuum dried at 95 ° C for 12 hours, and then supplied to an extruder type melt spinning machine to be melted. The spun yarn (discharge hole diameter: 0.3 mm, discharge hole length 0.6 mm, number of holes 780, round hole) was spun at a spinning temperature of 280 ° C to obtain a spun yarn. The spun yarn was cooled by a cooling air having a wind temperature of 20 ° C and a wind speed of 25 m/min, and the oil was supplied to the oil supply device to be bundled, and was pulled by a roller rotating at 1000 m/min to be combined with other spinning wires. After 36 pieces of wire, they were stored by shaking off into the can to obtain undrawn wires. The cans containing the unstretched yarns were placed in parallel with 30 cans, and 30 unstretched wires were placed in a warm water bath at 90° C., and stretched at a stretching ratio of 2.4 times. Next, the number of crimps was set to about 10 peaks/25 mm, and the crimping process was performed by a crimping machine, and after drying at 130 ° C, 0.5% by mass of the oiling agent was applied to the fibers by spraying, and the rotary type was applied. The cutter was cut into 64 mm to obtain polymethylpentene fibers.

The obtained polymethylpentene fiber is put into a carding machine After the sliver, mix 8 strips in the draw frame. Then, the yarn was spun in a roving machine to obtain a coarse spinning of 0.5 to 25.4 mm. This spun yarn was supplied to a spinning machine to obtain a textile yarn having a number of 18 turns/25.4 mm and a British cotton count of 20. The obtained textile yarn was used for warp yarns and weft yarns to produce a flat fabric having a warp density of 70 strips/25.4 mm and a weft yarn density of 70 strips/25.4 mm.

The fiber of the obtained polymethylpentene fiber is shown in Table 1. The evaluation results of the fiber properties and fabric characteristics of the yarns. Since it is a fabric using a textile yarn made of a low specific gravity polymethylpentene fiber, it is extremely lightweight. It is also excellent in heat retention and quick-drying properties, and is also excellent in ironing heat resistance. Further, regarding the hand feeling, the softness is high, the grade is excellent, the number of piles is small, and the raising is a good level.

(Examples 2 to 4)

Polymethylpentene fibers, textile yarns, and plain woven fabrics were produced in the same manner as in Example 1 except that the enthalpy coefficient was changed as shown in Table 1.

The fiber of the obtained polymethylpentene fiber is shown in Table 1. The evaluation results of the fiber properties and fabric characteristics of the yarns. Even when the twist factor is changed, it is extremely excellent in lightness, heat retention, and quick-drying property, and is excellent in ironing heat resistance. Further, when the twist coefficient is reduced as compared with the first embodiment, although the increase in the number of fluff is observed, it is a good level, and when the twist factor is increased, the flat fabric is not hardened, and in any case, the grade is excellent. .

(Comparative Example 10), (Example 6)

Polymethylpentene fibers, textile yarns, and plain woven fabrics were produced in the same manner as in Example 1 except that the single yarn fineness was changed as shown in Table 1.

Table 1 shows the evaluation results of the fiber characteristics of the obtained polymethylpentene fibers, the fiber characteristics of the textile yarns, and the fabric characteristics. Compared with Example 1, in Comparative Example 10, although the single-filament fineness was reduced, although the lightweight property, the heat retention property, and the quick-drying property were increased, the hair raising did not reach the acceptable level due to the increase in the number of fluff. In Example 6, any of the fabric characteristics were all qualified.

(Examples 7 to 10)

In the examples 7 and 8, the lengths of the cuts when the polymethylpentene fibers were cut were 38 mm and 120 mm, respectively, and in the examples 9 and 10, the polymethylpentene fibers were crimped. Polymethylpentene fibers, textile yarns, and plain woven fabrics were produced in the same manner as in Example 1 except that the number of crimps was changed to about 5 peaks/25 mm and about 25 peaks/25 mm, respectively.

Table 2 shows the fiber of the obtained polymethylpentene fiber. The evaluation results of the fiber properties and fabric characteristics of the yarns. Even when the average fiber length or the number of crimps is changed, all the fabric characteristics are acceptable.

(Examples 11, 12)

Polymethylpentene fibers, textile yarns, and plain woven fabrics were produced in the same manner as in Example 1 except that the number of British cottons was changed to 10 counts and 100 counts at the time of spinning.

Table 2 shows the fiber of the obtained polymethylpentene fiber. The evaluation results of the fiber properties and fabric characteristics of the yarns. Compared with Example 1, in Example 11, by reducing the number of British cotton counts, although the lightness was slightly lowered, it was a pass level. Regarding the other fabric characteristics, it was also in the performance levels in Examples 11 and 12.

(Example 13)

A polymethyl was produced in the same manner as in Example 1 except that the spinning nozzle was changed to a Y-shaped nozzle (slit width 0.08 mm, slit length 0.2 mm, discharge hole length 0.6 mm, number of holes 780, Y hole) in Example 7. Pentylene fibers, textile yarns and flat fabrics.

Table 2 shows the evaluation results of the fiber characteristics of the obtained polymethylpentene fibers, the fiber characteristics of the textile yarns, and the fabric characteristics. Compared with Example 1, in Example 7, by making the fiber cross section a Y cross section, heat retention and quick drying property were increased. Moreover, the ironing heat resistance is also good, and it is also excellent in lightness and hand feeling. Furthermore, as regards raising, it is also a good standard.

(Examples 14 to 21)

Polymethylpentene fibers, textile yarns, and plain woven fabrics were produced in the same manner as in Example 1 except that the pellets of the polymethylpentene-based resin and the thermoplastic resin produced by the following method were used and the spinning temperature was changed.

90% by weight of polymethylpentene (PMP) ("DX820" by Mitsui Chemicals, melting point 232 ° C, MFR 180 g/10 min), 10% by weight The blending ratio of the thermoplastic resin was kneaded at a mixing temperature of 260 ° C using a twin-screw extruder. The strand spouted by the twin-screw extruder was water-cooled, and cut into a length of about 5 mm in a granulator to obtain pellets. As a thermoplastic resin, polylactic acid (PLA) (melting point: 168 ° C, weight average molecular weight: 145,000) was used in Example 14, and polyethylene terephthalate (PET) was used in Example 15 (T701T manufactured by Toray Industries, Inc.) In the case of Example 16, polytrimethylene terephthalate (PPT) ("Kortel CP513000" manufactured by SHELL, melting point 225 ° C) was used, and in Example 17, nylon 6 (N6) was used. "Amilan CM1017", melting point: 225 ° C), in Example 18, nylon 66 (N66) ("3003001-N" manufactured by Toray Industries, melting point 265 ° C) was used, and polymethyl methacrylate was used in Example 19. (PMMA) ("Acrypet VH000" manufactured by Mitsubishi, Ltd., melting point: 140 ° C), and maleic anhydride-modified polypropylene (MPP) ("Youmex 1010" manufactured by Sanyo Chemical Co., Ltd., melting point 142 ° C) was used in Example 20. In Example 21, cellulose acetate propionate (CAP) ("CAP-482-20" manufactured by Eastman Chemical Co., melting point: 195 ° C) was used. The spinning temperature was 260 ° C in Examples 14, 16, 17, 19 to 21, and 290 ° C in Examples 15 and 18.

The fiber of the obtained polymethylpentene fiber is shown in Table 3. The evaluation results of the fiber properties and fabric characteristics of the yarns. Even when it is compounded with any of the thermoplastic resins, the lightness of the polymethylpentene-based resin is not impaired, and the lightweight of the flat fabric is a good standard. In addition, regarding heat retention, quick-drying, and raising, all are also qualified. In Examples 14 and 19 to 21, although the melting point of the thermoplastic resin was lower than 200 ° C, since the thermoplastic resin was finely dispersed in the polymethylpentene-based resin, the ironing heat resistance was also a satisfactory level. Further, among polymethyl pentene resins having a low refractive index, The thermoplastic resin having high color rendering property is finely dispersed, and the flat fabric is uniform and clear, and the color rendering property is also excellent. Furthermore, regarding the hand feeling, it is also highly flexible and is an excellent taste.

(Examples 30, 31)

Using a biaxial extruder at 80% by weight of polymethylpentene (PMP) ("DX820" by Mitsui Chemicals, melting point 232 ° C, MFR 180 g/10 min), 20% by weight of carbon black blending ratio, The mixture was kneaded at a mixing temperature of 260 °C. The strand spouted by the twin-screw extruder was water-cooled, and cut into a length of about 5 mm in a granulator to obtain a master batch.

In addition to polymethylpentene (PMP) (manufactured by Mitsui Chemicals Co., Ltd.) The DX820", melting point 232 ° C, MFR 180 g / 10 min) pellets and masterbatch were vacuum dried at 95 ° C for 12 hours, then supplied to the polymethylpentene from the main feeder of the extruder melt spinning machine. Polymethylpentene fibers, textile yarns, and plain woven fabrics were produced in the same manner as in Example 1 except that the feeder was supplied with a master batch. Further, in Example 30, the blend ratio of 99.5% by weight of polymethylpentene and 2.5% by weight of the master batch was used, and the carbon black in the obtained polymethylpentene fiber was 0.5% by weight. In the blend ratio of 75 wt% of polymethylpentene and 25% by weight of the master batch in 31, the carbon black in the obtained polymethylpentene fiber was 5% by weight.

The fiber of the obtained polymethylpentene fiber is shown in Table 3. The evaluation results of the fiber properties and fabric characteristics of the yarns. As the polymethylpentene fiber, the color development property of the textile yarn is extremely good due to the use of the raw liquid dyed fiber by carbon black. Regarding other fabric characteristics, all of the examples were also in the examples 30 and 31.

(Examples 22 to 29)

Using the polymethylpentene fibers obtained in Example 1, blended with polyethylene terephthalate fibers (circular cross section, average fiber length 51 mm, single yarn fineness 1.7 dtex) in Examples 22 to 24, in Examples In 25, it was blended with mucocile fiber (average fiber length 51 mm, single fiber fineness 1.7 dtex), and blended with cotton (American cotton, average fiber length 25.4 mm, monofilament fineness 2.3 dtex) in Examples 26-28. In Example 29, it was blended with wool (merino wool, average fiber length 64 mm, monofilament fineness 5.5 dtex). After the polymethylpentene fiber and the chemical fiber or the natural fiber were put into a carding machine at a blending ratio shown in Table 4 to form a sliver, a textile yarn and a plain fabric were produced in the same manner as in Example 1.

The fiber of the obtained polymethylpentene fiber is shown in Table 4. The evaluation results of the fiber properties and fabric characteristics of the yarns. In Examples 22 to 24, as the blending ratio of the polyethylene terephthalate fibers became higher, the apparent specific gravity was higher, the heat retention rate was lowered, and the drying time was prolonged. However, in light weight, All of the heat preservation, quick-drying, ironing heat resistance, hand feeling, and raising are all qualified. The L* value decreases as the blending ratio of the polyethylene terephthalate fibers increases, and the color rendering property increases. In the examples 26 to 28, even when blended with cotton, the blending ratio of the cotton became higher, and all of the fabric characteristics were similar to those of Examples 22 to 24, which was a pass level. When mixed with the mucilage in Example 25, it was also qualified in all the fabric characteristics when blended with wool in Example 29.

(Examples 32 to 34)

The polymethylpentene fibers obtained in Example 1 and polyethylene terephthalate fibers (circular cross section, average fiber length 51 mm, and monofilament fineness 1.7 dtex) were placed in a carding machine at a blending ratio shown in Table 5. After the sliver was formed, a woven yarn and a flat woven fabric were produced in the same manner as in the first embodiment.

The fiber of the obtained polymethylpentene fiber is shown in Table 5. The evaluation results of the fiber properties and fabric characteristics of the yarns. As the blending ratio of polyethylene terephthalate fibers becomes lower, the apparent specific gravity becomes lower, the heat retention rate increases, and the drying time becomes shorter. The lightweight, heat retaining, quick drying, ironing heat resistance Sex, feel, and hair are all qualified.

(Examples 35 to 40)

The polymethylpentene fibers obtained in Example 31 and polyethylene terephthalate fibers (circular cross section, average fiber length 51 mm, single yarn fineness 1.7 dtex) were placed in a carding machine at a blending ratio shown in Table 5. After the sliver was formed, a woven yarn and a flat woven fabric were produced in the same manner as in the first embodiment.

Table 5 shows the evaluation results of the fiber characteristics of the obtained polymethylpentene fibers, the fiber characteristics of the textile yarns, and the fabric characteristics. Since the raw liquid dyed fiber by using carbon black is used as the polymethylpentene fiber, the color development of the textile yarn is extremely good. Moreover, as the blending ratio of the polyethylene terephthalate fibers becomes lower, the apparent specific gravity is lowered, the heat retention rate is increased, and the drying time is shortened, and the lightweight, heat retaining property, quick drying property, and ironing are observed. All of the hot heat resistance, hand feeling, and fluffing are qualified.

(Comparative Examples 1, 2)

Polymethylpentene fibers, textile yarns, and plain woven fabrics were produced in the same manner as in Example 1 except that the single yarn fineness was changed as shown in Table 5.

The fiber of the obtained polymethylpentene fiber is shown in Table 5. The evaluation results of the fiber properties and fabric characteristics of the yarns. In Comparative Examples 1 and 2, the lightweight, heat retaining property, quick drying property, and ironing heat resistance were all acceptable standards. However, in Comparative Example 1, since the fineness of the single yarn was small, the generation of a large amount of fluff was observed, which was a very bad hand. In Comparative Example 2, since the single yarn fineness was large, the flat fabric lacked softness and was extremely poor in hand.

(Comparative Examples 3 and 4)

Polymethylpentene fibers, textile yarns, and plain woven fabrics were produced in the same manner as in Example 1 except that the enthalpy coefficient was changed as shown in Table 5.

The fiber of the obtained polymethylpentene fiber is shown in Table 5. The evaluation results of the fiber properties and fabric characteristics of the yarns. In Comparative Examples 3 and 4, the lightweight, heat retaining property, quick drying property, and ironing heat resistance were all acceptable standards. However, in Comparative Example 3, the generation of fluff was observed due to the small enthalpy coefficient, which was a slightly inferior hand. In Comparative Example 4, the flat fabric was hardened due to the large enthalpy coefficient, and the hand feeling lacked flexibility. Also, the majority of the fluff was seen and did not reach the standard level.

(Comparative examples 5 to 8)

In Comparative Example 5, polypropylene fibers (circular cross section, average fiber length: 51 mm, and single fiber fineness: 1.7 dtex) were used, and in Comparative Example 6, polyethylene terephthalate fibers (circular cross section, average fiber length of 51 mm, single sheet) were used. Silk fineness: 1.7 dtex), cotton (American cotton, average fiber length 25.4 mm, single yarn fineness 2.3 dtex) was used in Comparative Example 7, and wool was used in Comparative Example 8 (beautiful A woven wool yarn and a plain woven fabric were produced in the same manner as in Example 1 except that wool was used, the average fiber length was 64 mm, and the single yarn fineness was 5.5 dtex.

Table 5 shows the fiber properties and fabric of the resulting textile yarn. Evaluation results of characteristics. In Comparative Example 5, although extremely excellent lightness, heat retention, quick-drying property, and hand feeling were exhibited, the melting point of polypropylene was low, and ironing heat resistance was extremely low. Also, regarding the raising of hair, it has not reached the level of qualification. In Comparative Example 6, although the properties other than the lightweight property were excellent, the polyethylene terephthalate had a high specific gravity and was not lightweight. In Comparative Example 7, since the specific gravity of cotton was high and the lightweight property was poor, the thermal conductivity was high and the heat retention property was lacking. Moreover, the drying time is long, the quick-drying property is slightly poor, and the hair raising is not up to the qualified level. In Comparative Example 8, since the specific gravity of the wool was high, the lightweightness was low, the drying time was extremely long, and the quick-drying property was poor. Also, regarding the raising of hair, it has not reached the level of qualification.

(Comparative Example 9)

Granules of polymethylpentene (PMP) ("DX820" by Mitsui Chemicals, melting point 232 ° C, MFR 180 g/10 min) and polypropylene (PP) ("Novatec FY6" manufactured by Japan POLYFLOW, melting point 170 ° C) at 95 ° C After vacuum drying for 12 hours, the blending ratio of 50% by weight of polymethylpentene and 50% by weight of polypropylene was supplied to a melt-melting type melt spinning machine to melt each, and the spinning temperature was 260 ° C. The spin-spinning nozzle (discharge hole 0.3 mm, discharge hole length 0.6 mm, hole number 780, radial type round hole: 16 divisions) was discharged, and a spun yarn was obtained. The spun yarn was cooled by a cooling air having a wind temperature of 20 ° C and a wind speed of 25 m/min, and an oil agent was applied to the oil supply device to be bundled, and was pulled by a roller rotating at 1000 m/min, and other spinning hammers. After 36 pieces of wire were combined, they were stored by shaking off into the can to obtain undrawn yarn. Will receive The cans having the unstretched filaments were placed in parallel with 30 cans, and 30 unstretched filaments were twisted, and guided to a warm water bath at 90 ° C to extend at a stretching ratio of 2.4 times. Next, the number of crimps was set to about 10 peaks/25 mm, and the crimping process was performed by a crimping machine, and after drying at 130 ° C, 0.5% by mass of the oiling agent was applied to the fibers by spraying, and the rotary type was applied. The cutter was cut into 100 mm to obtain a polymethylpentene fiber, that is, a 16-part split type composite fiber comprising polymethylpentene and polypropylene. Further, the split type composite fiber has a single yarn fineness of 3.3 dtex.

The obtained split type composite fiber is put into a carding machine After the sliver, mix 8 strips in the draw frame. Then, the yarn was spun in a roving machine to obtain a coarse spinning of 0.5 to 25.4 mm. This spun yarn was supplied to a spinning machine to obtain a textile yarn having a number of turns of 4 /25.4 mm and a British cotton count of 20 counts. Next, the obtained textile yarn was run at a speed of 0.5 m/min between rolls having a V-shaped spiral groove, and a high-pressure liquid flow jetting device having a plurality of injection holes having a nozzle diameter of 0.5 mm from above was used for the textile yarn. A water flow of 6.0 MPa was sprayed, and the split type composite fiber constituting the textile yarn was divided. The textile yarn after the division treatment was composed of a polymethylpentene fiber having a single-filament fineness of 0.2 dtex and a polypropylene fiber having a single-filament fineness of 0.2 dtex in a weight ratio of 50:50. The textile yarn obtained by the splitting process was used for warp yarns and weft yarns to produce a flat fabric having a warp density of 70 strips/25.4 mm and a weft yarn density of 70 strips/25.4 mm.

The fiber of the obtained polymethylpentene fiber is shown in Table 5. The evaluation results of the fiber properties and fabric characteristics of the yarns. Lightweight, heat preservation and quick drying are qualified. However, since the polymethylpentene fibers constituting the textile yarn and the polypropylene fibers have a small fineness, the pole is extremely small. The production of more fluff is a very bad hand. Further, since the fineness of the single yarn is small, the heat of ironing is easily transmitted to the textile yarn, and is strongly influenced by the polypropylene which is inferior in heat resistance to polymethylpentene, and as a result, the ironing heat resistance is extremely low.

(Comparative Example 11)

Granules of polymethylpentene (PMP) ("DX820" by Mitsui Chemicals, melting point 232 ° C, MFR 180 g/10 min) and polypropylene (PP) ("Novatec FY6" manufactured by Japan POLYFLOW, melting point 170 ° C) at 95 ° C After vacuum drying for 12 hours, the blending ratio of 50% by weight of polymethylpentene and 50% by weight of polypropylene was supplied to a melt-melting type melt spinning machine to melt each, at a spinning temperature of 260 ° C. A spinning nozzle (discharge hole 0.3 mm, discharge hole length 0.6 mm, hole number 780, core sheath type round hole, core: polypropylene, sheath: polymethylpentene) was spun, and a spun yarn was obtained. The spun yarn was cooled by a cooling air having a wind temperature of 20 ° C and a wind speed of 25 m/min, and the oil was supplied to the oil supply device to be bundled, and was pulled by a roller rotating at 1000 m/min to be combined with other spinning wires. After 36 pieces of wire, they were stored by shaking off into the can to obtain undrawn wires. The cans containing the unstretched yarns were placed in parallel with 30 cans, and 30 unstretched wires were placed in a warm water bath at 90° C., and stretched at a stretching ratio of 2.4 times. Next, the number of crimps was set to about 10 peaks/25 mm, and the crimping process was performed by a crimping machine, and after drying at 130 ° C, 0.5% by mass of the oiling agent was applied to the fibers by spraying, and the rotary type was applied. The cutter was cut into 51 mm to obtain a polymethylpentene fiber, that is, a core-sheath type composite fiber comprising polymethylpentene and polypropylene.

The obtained core-sheath type composite fiber is put into a carding machine After the sliver, mix 8 strips in the draw frame. Then, the yarn was spun in a roving machine to obtain a coarse spinning of 0.5 to 25.4 mm. This coarse spinning It is supplied to the spinning machine to obtain a textile yarn of 18 counts/25.4 mm and a British cotton count of 30 counts. The obtained textile yarn was used for warp yarns and weft yarns to produce a flat fabric having a warp density of 70 strips/25.4 mm and a weft yarn density of 70 strips/25.4 mm.

The fiber of the obtained polymethylpentene fiber is shown in Table 5. The evaluation results of the fiber properties and fabric characteristics of the yarns. Lightweight, heat preservation and quick drying are qualified. However, since the heat resistance of the polypropylene disposed in the core is low, the shape change is seen on the surface of the fabric after touching the iron, and the ironing heat resistance is not up to the acceptable level. Moreover, the obtained textile yarns saw a large amount of fluff caused by the sheath crack, which was a very bad hand.

[Industrial availability]

The textile yarn of the present invention is excellent in light weight, simultaneous heat retention, quick-drying property, and ironing heat resistance. Therefore, a fiber structure such as a woven fabric or a nonwoven fabric can be suitably used.

Claims (10)

A textile yarn comprising 60% by weight or more of a constituent component of a polymethylpentene-based resin and comprising a polymethylpentene fiber having a single-filament fineness of 2 to 20 dtex, and having a number of turns of T (back/25.4 mm) When the British cotton count is N, the 捻 coefficient K calculated by the following formula (I) is 1.3 to 6.5; (I) K = T ÷ N ^1/2 . The textile yarn of claim 1, wherein the polymethylpentene fiber is a fiber comprising a thermoplastic resin different from the polymethylpentene resin in the polymethylpentene resin. The textile yarn of claim 1 or 2, wherein the polymethylpentene fiber has an average fiber length of 10 to 100 mm. A textile yarn according to any one of claims 1 to 3, which is obtained by blending the polymethylpentene fiber with a chemical fiber or a natural fiber. The textile yarn of claim 4, wherein the polymethylpentene fiber is regarded as (A), and the chemical fiber or the natural fiber is regarded as (B), the blend ratio of (A) to (B) (weight) The ratio is A/B=85/15~97/3. The textile yarn of any one of claims 1 to 5, which has an apparent specific gravity of 0.83 to 1.2. The textile yarn of any one of claims 4 to 6, wherein the chemical fiber or the natural fiber has a melting point or decomposition temperature of 200 ° C or higher. The textile yarn according to any one of claims 4 to 7, wherein the chemical fiber is selected from the group consisting of a polyester fiber, a polyamide fiber, a polyacryl fiber, a cellulose fiber, and a cellulose fiber. At least one of the fibers. A textile yarn according to any one of claims 4 to 8, wherein the natural fiber system It is selected from at least one fiber comprising a group of cotton, crepe, hemp, and wool. A fibrous structure which is used in at least a portion of the textile yarn of any one of claims 1 to 9.