JP5431816B2 - Fabrics and textiles having slits - Google Patents

Description

  The present invention relates to a fabric having a slit portion, which has both air permeability and permeation resistance, and a textile product using the fabric.

Conventionally, it has been proposed to form a slit portion in a sheet-like material in order to add air permeability (see, for example, Patent Document 1).
However, in such a sheet-like material, since light is transmitted from the slit portion, there has been a problem that permeation resistance and ultraviolet ray prevention are impaired.
Thus, air permeability and permeation resistance are normally contradictory performances, and fabrics that have both air permeability and permeation resistance have not been proposed so far.

JP-A-5-228049

  The present invention has been made in view of the above background, and an object of the present invention is to provide a fabric having a slit portion, which has both air permeability and permeation resistance, and a textile product using the fabric. There is.

  As a result of intensive studies to achieve the above-mentioned problems, the present inventor is excellent in suppressing light transmission when either one of the sides forming the slit part is lifted when forming the slit part on the fabric surface. As a result, the inventors have found that a high air permeability can be obtained, and have made further studies to complete the present invention.

Thus, according to the present invention, “a fabric having a slit portion on the surface, and one side of the two sides forming the slit portion is three-dimensionally raised more than the other side, so that the slit portion is three-dimensionally formed. There is provided a fabric having a slit portion that is open and satisfies at least one of the following requirements (1) to (3):
(1) After the fabric is left in an atmosphere of a temperature of 20 ° C. and a humidity of 65% RH for 24 hours, one side of both sides forming the slit portion is three-dimensionally raised more than the other side.
(2) After water is applied to the fabric so that the moisture content is 70%, one side of both sides forming the slit portion is three-dimensionally raised than the other side.
(3) The slit part is in a state after the fabric is left in an atmosphere of a temperature of 20 ° C. and a humidity of 65% RH for 24 hours and in a state after water is applied to the fabric so that the moisture content becomes 70%. The floating state of the side to be formed changes.

In that case, it is preferable that the length direction of the said slit part is the same direction as the warp direction or the weft direction of the fabric. Moreover, it is preferable that the length of the said slit part exists in the range of 2-20 mm. Moreover, it is preferable that the floating height of one side which floats among both sides which form a slit part exists in the range of 0.5-10 mm.

  In the fabric of the present invention, the fabric is composed of a water-absorbing self-stretching yarn and a non-self-stretching yarn, a region 1 composed of a water-absorbing self-stretching yarn and a non-self-stretching yarn, and a region 2 composed of only a non-self-stretching yarn. It is preferable that the slit portion is formed at the boundary between the part 1 and the part 2.

However, the water-absorbing self-stretching yarn and the non-self-stretching yarn are yarns defined below. That is, using a rewind frame with a frame circumference of 1.125 m and applying a load of 0.88 mN / dtex (0.1 g / de) and rewinding at a constant speed, a number of turns: 10 times of skein was made and cut off. The yarn is allowed to stand for 24 hours in an environment of a temperature of 20 ° C. and a humidity of 65 RH%. This is 1.76 mN / dtex (200 mg / de) for an inelastic yarn and 0.0088 mN / dtex (1 mg / de) for an elastic yarn. The yarn length (mm) measured by applying a load of de) is defined as the yarn length at the time of drying. The yarn is immersed in water at a water temperature of 20 ° C. for 5 minutes and then pulled up from the water. As in the case of drying, the yarn is 1.76 mN / dtex (200 mg / de) in the case of an inelastic yarn, and in the case of an elastic yarn, it is 0.7. The yarn length (mm) measured by applying a load of 0088 mN / dtex (1 mg / de) is defined as the wet yarn length. The inelastic yarn is a yarn having a breaking elongation of 200% or less, and the elastic yarn is a yarn having a breaking elongation higher than 200%. And a thing whose swelling rate of the fiber axis direction calculated | required by the following formula is 5% or more is defined as a water absorption self-extension yarn. On the other hand, those having a swelling rate of less than 5% are defined as non-self-stretching yarns.
Swell ratio (%) = ((wet yarn length) − (dry yarn length)) / (dry yarn length) × 100

  Here, the water-absorbing self-extending yarn is preferably a polyether ester fiber made of a polyether ester elastomer having polybutylene terephthalate as a hard segment and polyoxyethylene glycol as a soft segment. The water-absorbing self-extending yarn is preferably a composite fiber in which two-component polymers having different hygroscopic properties are joined in a side-by-side manner. The non-self-stretching yarn is preferably a polyester fiber or an elastic fiber.

  In the fabric of the present invention, the slit portion is preferably formed by knitting structure, cutting, or fiber dissolution. Moreover, it is preferable that a metal oxide or a carbon particle is contained in the fabric.

  Further, according to the present invention, outer clothing, sports clothing, inner clothing, shoe materials, medical / hygiene products such as diapers and nursing sheets, bedding, chairs and sofas, using the fabric described above. Any fiber product selected from the group consisting of a skin material such as carpet, car seat, and interior goods is provided.

  ADVANTAGE OF THE INVENTION According to this invention, it is the fabric which has a slit part, Comprising: The fabric which has air permeability and permeation-proof property, and the textiles using this fabric are obtained.

It is a figure which shows typically the fabric of this invention which 1 side has lifted among the both sides which form a slit part. It is a figure which shows typically the conventional fabric in which both the sides which form a slit part are not lifted up. It is a figure which shows typically the fabric of this invention which one side floats among the both sides which form a slit part at the time of moisture. It is a figure which shows typically the fabric of this invention which one side floats out of the both sides which form a slit part at the time of drying. It is a figure which shows typically the fabric of this invention which one side floats among the both sides which form a slit part at the time of moisture.

Hereinafter, embodiments of the present invention will be described in detail.
First, the fabric of the present invention has a slit portion on the fabric surface. It is important that the slit portion penetrates from one surface to the other surface. If it does not penetrate, sufficient air permeability cannot be obtained, which is not preferable.

  In the fabric of the present invention, as schematically shown in FIG. 1, one side of both sides forming the slit portion is three-dimensionally raised from the other side. At that time, when the fabric is viewed from above the fabric surface, the opening of the slit portion is not visible, but when the fabric is viewed from the side, the opening is visible, so that excellent air permeability is obtained while suppressing light transmission. . When the slit portion is simply formed as in the conventional fabric and the side forming the slit portion is not lifted (schematically shown in FIG. 2), that is, when the slit portion is not open three-dimensionally. Is not preferable because sufficient air permeability cannot be obtained.

  Here, if such a fabric having a slit portion on the surface of the fabric is a woven fabric composed of warps and wefts, the warps between the adjacent warps A and B, or between the adjacent wefts C and D, Bent portions of the warps A and B or the wefts C and D when the wefts or warps perpendicular to A and B or the wefts C and D are cut and the fabric is viewed from the cross-sectional direction Are woven fabrics having different phases. Further, if the knitted fabric is composed of a course constituent component and a wale constituent component, between the course constituent components A and B adjacent to each other, or between the whale constituent components C and D adjacent to each other, the course constituent components A and B, or When there is a portion where adjacent loops are not connected over the length of the wale component or the course forming component orthogonal to the wale components C and D, and the knitted fabric is viewed from the cross-sectional direction, It is a knitted fabric in which the course forming components A and B or the wale components C and D have different bending phases.

Here, the lifting height may be invariable or variable depending on the wet state of the fabric. For example, the following aspects are preferably exemplified.
First, in the first aspect, after the fabric is left in an atmosphere of a temperature of 20 ° C. and a humidity of 65% RH for 24 hours (hereinafter sometimes referred to as “dried state”), both sides forming the slit portion are formed. Of these, at least one of the sides is raised.

  Next, in the second aspect, after water is applied by spraying so that the moisture content of the fabric becomes 70% (hereinafter sometimes referred to as “wet state”), both sides forming the slit portion are provided. It is a fabric in which at least one of the sides is raised.

  Moreover, in the 3rd aspect, it is the fabric from which the floating height of the edge | side which forms a slit part changes with the said dry state and wet state. At that time, it is preferable that the length of the side changes by 2% or more between the dry state and the wet state. )

  Here, as schematically shown in FIG. 3 and FIG. 5, the rising height of the side forming the slit portion may be higher in the wet state than in the dry state. As schematically shown in FIG. 4, the height in the wet state may be smaller than the height in the dry state. At this time, the length of the floating side may be shortened and the floating height may be reduced, or the length of the non-lifted side may be increased and the floating height may be reduced.

  In addition, as a means to change the floating height of the side that forms the slit portion between the dry state and the wet state, it is composed of a water-absorbing self-stretching yarn (or water-absorbing self-shortening yarn) and a non-self-stretching yarn as described later. It is preferable to form a slit portion at the boundary between the portion 1 to be formed and the portion 2 composed only of the non-self-extending yarn. In this case, when the fabric is wetted, the water-absorbing self-extending yarn (water-absorbing self-shortening yarn) contained in the fabric self-extends (self-shortening). As a result, the length of the side located in the part 1 among the two sides forming the slit part is self-extended (self-shortening), so that the rising height of the side forming the slit part changes.

In the slit portion, the length direction (major axis direction) of the slit portion is not particularly limited, but is preferably the same direction as the warp direction or the weft direction of the fabric.
Further, the size of the slit portion is not particularly limited, but it is preferable that the length of the slit portion is in the range of 2 to 20 mm in order to obtain excellent air permeability. Moreover, when obtaining the outstanding air permeability, it is preferable that the lifting height of one of the sides forming the slit portion is in the range of 0.5 to 10 mm.
The number of the slit portions is preferably plural in order to obtain excellent air permeability. For example, the slit portions are preferably arranged at intervals of 2 to 30 mm in the warp direction and / or the weft direction of the fabric.

Although it does not specifically limit as a fiber which comprises this invention, It is preferable to comprise with the water absorption self-extension yarn and non-self-extension yarn which were described in Unexamined-Japanese-Patent No. 2007-327156.
That is, the water-absorbing self-stretching yarn and the non-self-stretching yarn are yarns defined below. That is, using a rewind frame with a frame circumference of 1.125 m and applying a load of 0.88 mN / dtex (0.1 g / de) and rewinding at a constant speed, a number of turns: 10 times of skein was made and cut off. The yarn is allowed to stand for 24 hours in an environment of a temperature of 20 ° C. and a humidity of 65 RH%. This is 1.76 mN / dtex (200 mg / de) for an inelastic yarn and 0.0088 mN / dtex (1 mg / de) for an elastic yarn. The yarn length (mm) measured by applying a load of de) is defined as the yarn length at the time of drying. The yarn is immersed in water at a water temperature of 20 ° C. for 5 minutes and then pulled up from the water. As in the case of drying, the yarn is 1.76 mN / dtex (200 mg / de) in the case of an inelastic yarn, and in the case of an elastic yarn, it is 0.7. The yarn length (mm) measured by applying a load of 0088 mN / dtex (1 mg / de) is defined as the wet yarn length. The inelastic yarn is a yarn having a breaking elongation of 200% or less, and the elastic yarn is a yarn having a breaking elongation higher than 200%. And a thing whose swelling rate of the fiber axis direction calculated | required by the following formula is 5% or more is defined as a water absorption self-extension yarn. On the other hand, those having a swelling rate of less than 5% are defined as non-self-stretching yarns.
Swell ratio (%) = ((wet yarn length) − (dry yarn length)) / (dry yarn length) × 100
Here, the water-absorbing self-stretching yarn is not particularly limited as long as it has the above-described swelling rate, but preferably has a swelling rate of 6% or more (more preferably 8 to 30%).

  Examples of such water-absorbing self-stretching yarns include polyether ester fibers made of a polyether ester elastomer having polybutylene terephthalate as a hard segment and polyoxyethylene glycol as a soft segment, polyacrylic acid metal salts, polyacrylic acid and the like. Copolymer, polymethacrylic acid and its copolymer, polyvinyl alcohol and its copolymer, polyacrylamide and its copolymer, polyester fiber blended with polyoxyethylene polymer, 5-sulfoisophthalic acid component Examples include polymerized polyester fibers. Especially, the polyether ester fiber which consists of a polyether ester elastomer which uses polybutylene terephthalate as a hard segment and uses polyoxyethylene glycol as a soft segment is illustrated suitably.

  The polybutylene terephthalate preferably contains at least 70 mol% of butylene terephthalate units. The content of butylene terephthalate is more preferably 80 mol% or more, and still more preferably 90 mol% or more. The acid component is mainly composed of terephthalic acid, but a small amount of other dicarboxylic acid components may be copolymerized. The glycol component is mainly composed of tetramethylene glycol, but other glycol components are copolymerized. It may be added as a component.

  Examples of dicarboxylic acids other than terephthalic acid include naphthalenedicarboxylic acid, isophthalic acid, diphenyldicarboxylic acid, diphenyloxyethanedicarboxylic acid, β-hydroxyethoxybenzoic acid, p-oxybenzoic acid, adipic acid, sebacic acid, and 1,4- Examples thereof include aromatic and aliphatic dicarboxylic acid components such as cyclohexanedicarboxylic acid. Further, a tricarboxylic or higher polycarboxylic acid such as trimellitic acid or pyromellitic acid may be used as a copolymerization component as long as the achievement of the object of the present invention is not substantially impaired.

  Examples of diol components other than tetramethylene glycol include aliphatic, alicyclic and aromatic diol compounds such as trimethylene glycol, ethylene glycol, cyclohexane-1,4-dimethanol, and neopentyl glycol. Can do. Furthermore, a trifunctional or higher functional polyol such as glycerin, trimethylolpropane, or pentaerythritol may be used as a copolymerization component as long as the achievement of the object of the present invention is not substantially impaired.

On the other hand, the polyoxyethylene glycol preferably contains at least 70 mol% or more of oxyethylene glycol units. The content of oxyethylene glycol is more preferably 80 mol% or more, and still more preferably 90 mol% or more. In addition to oxyethylene glycol, propylene glycol, tetramethylene glycol, glycerin and the like may be copolymerized within a range where the achievement of the object of the present invention is not substantially impaired.
The number average molecular weight of such polyoxyethylene glycol is preferably 400 to 8000, and particularly preferably 1000 to 6000.

  The polyether ester elastomer is obtained, for example, by subjecting a raw material containing dimethyl terephthalate, tetramethylene glycol and polyoxyethylene glycol to a transesterification reaction in the presence of a transesterification catalyst to produce bis (ω-hydroxybutyl) terephthalate and / or Alternatively, it can be obtained by forming an oligomer and then performing melt polycondensation under high temperature and reduced pressure in the presence of a polycondensation catalyst and a stabilizer.

The ratio of hard segment / soft segment is preferably 30/70 to 70/30 based on weight.
It is preferable that a known organic sulfonic acid metal salt is contained in such a polyether ester because a further excellent water absorption self-extension performance is obtained.

  The polyether ester fiber is obtained by melting and extruding the polyether ester from a normal melt spinneret, and taking it out at a take-up speed of 300 to 1200 m / min (preferably 400 to 980 m / min). It can manufacture by winding at 1.0-1.2 (preferably 1.0-1.1) of taking-up speed.

  In addition, as the water-absorbing self-stretching yarn, a composite fiber in which two-component polymers having different hygroscopic properties are joined in a side-by-side manner may be employed. For example, a composite fiber having a crimp formed by joining a polyester component and a polyamide component in a side-by-side manner and expressing latent crimping performance as disclosed in JP-A-2006-112009 is preferable. Such a composite fiber is a fiber whose apparent length becomes longer due to a decrease in the crimp rate when wet.

  Here, as the polyester component, in terms of adhesiveness with the other polyamide component, a compound having one or more functional groups having an alkali or alkaline earth metal of sulfonic acid or a phosphonium salt and having an ester forming ability Preferred examples thereof include modified polyesters such as polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate. Among these, modified polyethylene terephthalate obtained by copolymerizing the above compound is particularly preferable from the viewpoint of versatility and polymer cost. In this case, examples of the copolymer component include 5-sodium sulfoisophthalic acid and ester derivatives thereof, 5-phosphonium isophthalic acid and ester derivatives thereof, and sodium p-hydroxybenzenesulfonate. Of these, 5-sodium sulfoisophthalic acid is preferable. As a copolymerization amount, the range of 2.0-4.5 mol% is preferable. When the copolymerization amount is less than 2.0 mol%, although excellent crimping performance can be obtained, there is a possibility that peeling occurs at the bonding interface between the polyamide component and the polyester component. On the other hand, if the copolymerization amount is greater than 4.5 mol%, the crystallization of the polyester component becomes difficult to proceed during the stretching heat treatment, and thus it is necessary to raise the stretching heat treatment temperature. There is a risk.

  One polyamide component is not particularly limited as long as it has an amide bond in the main chain, and examples thereof include nylon-4, nylon-6, nylon-66, nylon-46, nylon-12, and the like. can give. Among these, nylon-6 and nylon-66 are preferable in terms of versatility, polymer cost, and yarn production stability.

  Next, non-self-stretched yarns include natural fibers such as cotton and linen, cellulosic chemical fibers such as rayon and acetate, and polyesters, polyamides, polyacrylonitriles, polypropylenes such as polyethylene terephthalate and polytrimethylene terephthalate. Synthetic fibers such as are exemplified. Especially, a normal polyester fiber is illustrated preferably.

  Instead of the water-absorbing self-stretching yarn, the following water-absorbing self-shortening yarn in which a polyamide component and a polyester component are joined in a side-by-side manner may be used. Such a water-absorbing self-shortening yarn is a fiber whose apparent length is shortened by increasing the crimp rate when wet.

  Here, the polyamide component is a polymer having an amide bond in the main chain, and examples thereof include nylon 4, nylon 6, nylon 12, nylon 46, nylon 66, and the like. Nylon 6 and nylon 66 are particularly preferable from the viewpoints of cost, versatility, and yarn production. These polyamide components may be copolymerized with known components, or these polyamide components contain pigments such as titanium oxide and carbon black, known antioxidants, antistatic agents, light-proofing agents, etc. You may let them.

  On the other hand, the polyester component is composed of a copolymer polyester in which 60 to 99.5 mol% of the repeating units constituting the polyester are occupied by ethylene terephthalate units and 0.5 to 40 mol% of ethylene isophthalate units are occupied. It is preferable. Usually, the heat shrinkage rate of polyester is considerably lower than that of polyamide. However, by employing such a copolyester as the polyester, it becomes possible to bring the heat shrinkage rate of the polyester closer to that of polyamide. As a result, in the crimped bent structure at the time of moisture absorption, a structure in which the swollen polyamide component is located on the outside and the polyester component is located on the inside is likely to occur, and the crimp rate is likely to increase. Here, it is not preferable that the ethylene terephthalate unit is less than 60 mol% because basic physical properties such as strength and elongation of the obtained composite fiber cannot be sufficiently maintained. When the ethylene terephthalate unit exceeds 99.5 mol% or the ethylene isophthalate is less than 0.5 mol%, the crimp rate does not increase so much when the composite fiber absorbs moisture (the apparent length of the crimped yarn). However, the thickness of the fabric may not be sufficiently reduced during moisture absorption. If the ethylene isophthalate exceeds 40 mol%, the basic physical properties such as the strength and elongation of the composite fiber cannot be maintained, and the thermal stability is inferior. ) There is a risk of a significant increase.

  Such a polyester may be produced by an arbitrary method. For example, polyethylene terephthalate will be described. A lower alkyl ester of terephthalic acid such as dimethyl terephthalate and ethylene glycol are obtained by directly esterifying terephthalic acid and ethylene glycol. Is directly esterified, or terephthalic acid and ethylene oxide are reacted to produce a glycol ester of terephthalic acid and / or a low polymer thereof. Next, the product is produced by heating under reduced pressure to cause a polycondensation reaction until a desired degree of polymerization is achieved.

  In this polyester, a third component may be copolymerized in addition to the ethylene terephthalate component and the ethylene isophthalate component constituting the polyester, and the third component may be either a dicarboxylic acid component or a glycol component. Examples of the dicarboxylic acid include bifunctional aromatic dicarboxylic acids such as phthalic acid, dibromoterephthalic acid, naphthalenedicarboxylic acid, diphenyldicarboxylic acid, diphenoxyethanedicarboxylic acid, β-hydroxyethoxybenzoic acid, sebacic acid, and adipic acid. , Bifunctional aliphatic dicarboxylic acid such as oxalic acid, 1,4-cyclohexanedicarboxylic acid and the like. A part of the glycol component may be replaced with another glycol component. Examples of the glycol component include cyclohexane-1,4-dimethanol, neopentyl glycol, bisphenol A, bisphenol S, 2,2-bis (4 Aliphatics such as -β-hydroxyethoxyphenyl) propane, bis (4-β-hydroxyethoxyphenyl) sulfone, 2,2-bis (3,5-dibromo-4- (2-hydroxyethoxy) phenyl) propane, fat Examples thereof include cyclic and aromatic diols. Furthermore, the above-mentioned polyester may be obtained by blending and melting a small amount of other polymers as required, or by using a small amount of a chain branching agent such as pentaerythritol, trimethylolpropane or trimellitic acid. In addition, the polyester of the present invention may of course be added with conventionally known antioxidants and anti-coloring agents in addition to pigments such as titanium dioxide and carbon black as in the case of ordinary polyesters.

  The polyester component preferably contains a polyether ester amide. When polyether ester amide is included in the polyester component, the polyester component becomes soft, the polyester component tends to follow when the polyamide component swells during moisture absorption, and the crimp rate tends to increase during moisture absorption. preferable. The amount of the polyether ester amide added to the polyester component is preferably 5 to 55% by weight based on the weight of the polyester component. If it is less than 5% by weight, when the composite fiber absorbs moisture, the crimp rate does not increase so much (apparent length of the crimped fiber is difficult to shorten), and the thickness of the fabric may not be sufficiently reduced during moisture absorption. . On the other hand, if it exceeds 55% by weight, stable spinning may not be possible.

  The polyether ester amide is preferably an ethylene oxide adduct (b) of a polyamide (a) having a carboxyl group at both ends and having a number average molecular weight of 500 to 5,000 and a bisphenol having a number average molecular weight of 1,600 to 3,000. ) "Induction" means that it is obtained by reacting both components, and can also be understood as being obtained by copolymerization.

  The polyamide (a) having carboxyl groups at both ends preferably comprises a polyamide portion and a molecular weight regulator. The polyamide portion is composed of at least one of (1) a lactam ring-opening polymer, (2) a polycondensate of aminocarboxylic acid, or (3) a polycondensate of dicarboxylic acid and diamine. Among these, the lactam of (1) includes butyrolactam, valerolactam, caprolactam, enantolactam, laurolactam, undecanolactam and the like. Examples of the aminocarboxylic acid (2) include ω-aminocaproic acid, ω-aminoenanthic acid, ω-aminopergonic acid, ω-aminocapric acid, 11-aminoundecanoic acid, and 12-aminododecanoic acid. Examples of the dicarboxylic acid (3) include adipic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, and isophthalic acid. Examples of the diamine (3) include tetramethylene diamine, pentamethylene diamine, hexamethylene diamine, heptamethylene diamine, octamethylene diamine, and decamethylene diamine. These lactams, aminocarboxylic acids, dicarboxylic acids, and diamines are collectively referred to as polyamide part-forming monomers.

  What was illustrated as a polyamide part formation monomer of the polyamide (a) which has a carboxyl group in both said terminal may use 2 or more types together. Among these, caprolactam, 12-aminododecanoic acid and adipic acid-hexamethylenediamine are preferable, and caprolactam is particularly preferable.

  The above polyamide (a) having carboxyl groups at both ends further uses a dicarboxylic acid component having 4 to 20 carbon atoms as a molecular weight regulator, and in the presence thereof, the polyamide part-forming monomer is opened by a conventional method. It can be obtained by polymerization or polycondensation. Examples of the dicarboxylic acid having 4 to 20 carbon atoms include fatty acid dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecanediic acid, and dodecanediic acid; terephthalic acid, isophthalic acid, Aromatic dicarboxylic acids such as phthalic acid or naphthalenedicarboxylic acid; aliphatic dicarboxylic acids such as 1,4-cyclohexanedicarboxylic acid or dicyclohexyl-4,4-dicarboxylic acid; or sodium 5-sulfoisophthalate or 5-sulfo Examples include 5-sulfoisophthalic acid alkali metal salts such as potassium isophthalate. Of these, preferred are aliphatic dicarboxylic acids, aromatic dicarboxylic acids, and alkali metal salts of 5-sulfoisophthalic acid. More preferred are adipic acid, terephthalic acid, and sodium 5-sulfoisophthalate.

  When the polyamide part-forming monomer is subjected to ring-opening polymerization or polycondensation by a conventional method, the average degree of polymerization is preferably from 2 to 10, more preferably from 3 to 8. As a result, the number average molecular weight of the polyamide portion is 100 to 1,000, more preferably 300 to 700.

  Furthermore, the polyamide (a) having a carboxyl group at both ends is a component having a polyamide moiety added to both ends of a dicarboxylic acid component having 4 to 20 carbon atoms, which is a molecular weight regulator, and a polyamide portion added to one end. Or a mixture of a component having a polyamide moiety at both ends and a component having a polyamide moiety at one end. In the case of a mixture, a molar ratio of 1 to 10 moles of the component having the polyamide moiety at both ends to 1 mole of the component to which the polyamide moiety is imparted at one end is preferable. More preferably, it is 3 to 8 moles of the component imparted to both ends with respect to 1 mole of the component imparted to one end. And the quantity of the component which has a carboxyl group of the above-mentioned polyamide part formation monomer is adjusted suitably so that it may have a carboxyl group in both ends. If only the lactam and / or aminocarboxylic acid is used as the polyamide part-forming monomer, the molecular weight modifier is a dicarboxylic acid component, so that the polyamide (a) having carboxyl groups at both ends can be easily produced. When a polycondensate of dicarboxylic acid and diamine is used as the polyamide part-forming monomer, for example, a polyamide (a) having carboxyl groups at both ends by using a method such as reacting the dicarboxylic acid again at the end of the polymer. Can be manufactured.

  The number average molecular weight of the polyamide (a) having a carboxyl group at both ends is usually 500 to 5,000, preferably 500 to 3,000. When the number average molecular weight is less than 500, the heat resistance of the polyether ester amide itself is lowered. On the other hand, when it exceeds 5,000, the reactivity is lowered, so that much time is required for producing the polyether ester amide. In order to make the number average molecular weight within this range, it is possible to select a dicarboxylic acid component having 4 to 20 carbon atoms to be a molecular weight regulator and appropriately set the reaction conditions in the polymerization of the polyamide portion.

  In the ethylene oxide adduct (b) of bisphenols, bisphenols include bisphenol A (4,4′-dihydroxydiphenyl-2,2-propane), bisphenol F (4,4′-dihydroxydiphenylmethane), bisphenol S. (4,4′-dihydroxydiphenylsulfone) and 4,4′-dihydroxydiphenyl-2,2-butane are exemplified, and among these, bisphenol A is preferable.

  The ethylene oxide adduct (b) of the above bisphenols can be obtained by adding ethylene oxide to these bisphenols by a conventional method. Also, other alkylene oxides (propylene oxide, 1,2-butylene oxide, 1,4-butylene oxide, etc.) can be used in combination with ethylene oxide, but the amount of other alkylene oxide used is based on the weight of the total ethylene oxide used. Usually, it is 10% by weight or less.

  The adduct (b) preferably has an average of 20 to 70 moles of ethylene oxide and other alkylene oxides (hereinafter referred to as ethylene oxide or the like) polymerized with respect to the two hydroxyl groups of the bisphenols. More preferably, 32 to 60 mol of ethylene oxide or the like is polymerized. That is, it is an adduct in which 10 to 35 mol, more preferably 16 to 30 mol, and still more preferably 16 to 20 mol of ethylene oxide or the like is polymerized (added) with respect to one hydroxyl group of bisphenol.

  The number average molecular weight of the adduct (b) is usually 1,600 to 3,000, and it is particularly preferable to use one having an ethylene oxide addition mole number of 32 to 60. When the number average molecular weight is less than 1,600, the antistatic property becomes insufficient. On the other hand, when it exceeds 3,000, the reactivity is lowered, so that a great amount of time is required for producing the polyetheresteramide. The number average molecular weight is preferably 1,800 to 2,400, and the number of added moles such as ethylene oxide is more preferably 32 to 40. In order to make the number average molecular weight within this range, the molecular weight of bisphenols is taken into consideration, and the number of added moles of ethylene oxide or the like can be adjusted.

  The above adduct (b) is used in the range of 20 to 80% by weight based on the total weight of the above (a) and (b) in the polyether ester amide. If the amount of the adduct (b) is less than 20% by weight, the antistatic property of the polyether ester amide is inferior. On the other hand, if it exceeds 80% by weight, the heat resistance of the polyether ester amide is lowered, which is not preferable. More preferably, the adduct (b) is used in the range of 40 to 70% by weight based on the total weight of the above (a) and (b).

  The relative viscosity of the polyether ester amide used in the present invention is 1.5 to 3.5 (0.5 wt%, m-cresol solution, 25 ° C.), preferably 2.0 to 3.0. If it is less than 1.5, the difference in melt viscosity from the base polymer component (polyamide component and polyester component) to be kneaded becomes large, so that it tends to stay in the conduit or the spinning pack. It tends to occur and the quality of the resulting composite fiber is not stable. On the other hand, in the range exceeding 3.5, it becomes a cause of yarn breakage during yarn production.

  The addition amount of the polyether ester amide to the polyamide component is optimally 0% by weight. If even a small amount is added, the hygroscopic elongation property of the polyamide component is lowered, and the function of the occurrence of crimping and the apparent yarn length shrinking at the time of moisture absorption, which is the object of the present invention, is impaired.

The fabric of the present invention can be produced, for example, by the following method.
First, as a method for producing the first and second aspects, the following method is preferable. A fabric having an elastic fiber (for example, a polyurethane elastic fiber or a polyether ester elastic fiber) or a portion containing a false twist crimped yarn and a portion made of only non-elastic and non-crimped fibers is woven and knitted by a conventional method. When the slit part is formed at the boundary between the two parts, the length of the side located in the part including the elastic fiber or false twisted crimped yarn of both sides forming the slit part is the length of the elastic fiber or false twisted crimped yarn. The other side rises because it is shortened by elastic recovery. Further, a fabric is obtained using heat-shrinkable fibers instead of elastic fibers or false twisted crimped yarns, and the other of the two sides forming the slit portion is thermally shrunk by heat treatment such as dyeing. You may raise the side of

  Next, as a method for producing the third aspect, the following method is preferable. A fabric having a portion 1 composed of the water-absorbing self-extending yarn (or water-absorbing self-shortening yarn) and a non-self-stretching yarn and a portion 2 composed of only the non-self-extending yarn is woven and knitted by a conventional method, and both portions When the slit portion is formed at the boundary, the fabric is wetted, so that the side located at the portion 2 out of both sides forming the slit portion expands and floats.

  In addition, as a method of forming a slit part, the method of forming by a knitting structure, the method of forming by cutting, such as a cutter, a laser, and an ultrasonic wave, the method of forming by melt | dissolution of a fiber, etc. are preferable. Of these, formation by a knitted structure is preferred because there is no fear of fiber fraying. In order to form the slit portion with a knitted structure, a tricot mesh structure or the like is difficult to fray, and a mesh structure including chain knitting is particularly preferable because a thin slit-shaped mesh can be easily formed.

  In the fabric of the present invention, the woven or knitted structure is not particularly limited, and examples thereof include woven structures such as plain weave, twill, satin, and knitted structures such as tengu, smooth, milling, kanoko, denby, and tricot. However, it is not limited to these. The number of layers is preferably a single layer, but may be two or more.

In addition, such fabrics include conventional dyeing processing, water absorption processing, further conventional brushing processing, ultraviolet shielding or antibacterial agents, deodorants, insect repellents, phosphorescent agents, retroreflective agents, negative ion generators, Various processings that impart functions such as a water repellent may be additionally applied. In particular, it is preferable to include metal oxide or carbon particles in the fabric because the shielding property against ultraviolet rays is improved. At that time, the metal oxide or carbon particles may be kneaded into the fibers constituting the fabric, or may be applied to the fabric by post-processing.
In the fabric thus obtained, at least one of the two sides forming the slit portion is raised, so that excellent air permeability can be obtained while suppressing light transmission.

  Next, the textile product of the present invention is made of the above-described fabric, and includes outer clothing, sports clothing, inner clothing, shoe materials, medical and hygiene products such as diapers and nursing sheets, bedding, and chairs. Or a textile product selected from the group consisting of a skin material such as a sofa, a carpet, a car seat, and interior goods. Since such a textile product uses the above-mentioned fabric, it has the normally contradictory properties of air permeability and permeation resistance.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited at all by these. In addition, each physical property in an Example is measured with the following method.

<Boiling water shrinkage (BWS)>
The test filament yarn is wound 10 times around a measuring machine with a circumference of 1.125 m to prepare a skein, and this skein is suspended from a hanging nail of a scale plate, and the bottom end of the skein hanging Then, a load 1/30 of the total mass of the skein was applied to measure the length L1 of the skein before the shrinkage treatment.
Remove the load from this skein, put the skein into a cotton bag, take out the cotton bag containing this skein from boiling water, take out the skein from this cotton bag, absorb the water contained in the skein with filter paper, This was air-dried at room temperature for 24 hours. The air-dried skein is hung on a hanging nail of the scale plate, and the lower part of the skein is applied with a load of 1/3 of the total mass of the skein, and the length of the skein after the shrinkage treatment is applied. L2 was measured.
The boiling water shrinkage (BWS) of the test filament yarn was calculated by the following formula.
BWS (%) = ((L1-L2) / L1) × 100

<Measurement of swelling rate>
Frame circumference: Using a rewind frame of 1.125 m, load: 0.88 mN / dtex (0.1 g / de) and rewind at a constant speed. It is allowed to stand for 24 hours in an environment of temperature 20 ° C. and humidity 65 RH%. In the case of inelastic yarn, it is 1.76 mN / dtex (200 mg / de), in the case of elastic yarn, 0.0088 mN / dtex (1 mg / de). The yarn length (mm) measured by applying a load of is taken as the yarn length at the time of drying. The yarn is immersed in water at a water temperature of 20 ° C. for 5 minutes and then pulled up from the water. As in the case of drying, the yarn is 1.76 mN / dtex (200 mg / de) in the case of an inelastic yarn, and in the case of an elastic yarn, it is 0.7. The yarn length (mm) measured by applying a load of 0088 mN / dtex (1 mg / de) was defined as the yarn length when wet.
Swell ratio (%) = ((wet yarn length) − (dry yarn length)) / (dry yarn length) × 100

<Crimping rate of composite fiber in woven / knitted fabric>
After leaving the woven or knitted fabric in an atmosphere at a temperature of 20 ° C. and a humidity of 65% RH for 24 hours, a small piece of 30 cm × 30 cm in the same direction as the woven or knitted fabric is cut from the woven or knitted fabric (n number = 5). Subsequently, the composite fiber was taken out from each piece, and the yarn length L0f was measured by applying a load of 1.76 mN / dtex (200 mg / de), and after 1 minute of dewetting, 0.0176 mN / dtex (2 mg / de). A load is applied to measure the yarn length L1f. Further, the yarn was immersed in water at a temperature of 20 ° C. for 2 hours and then taken out, and then lightly wiped off with a filter paper at a pressure of 0.69 mN / m ² for 5 seconds, and then 1.76 mN / dtex (200 mg / de). The yarn length L1f ′ is measured by applying a load of 0.0176 mN / dtex (2 mg / de) after 1 minute of dewetting. From the above measurement values, the following formulas are used to calculate the crimp rate DCf (%) during drying, the crimp rate HCf (%) when wet, and the difference in crimp rate (DCf−HCf) between dry and wet (DCf−HCf) ( %) Was calculated. In addition, the number of n was 5, and the average value was obtained.
Crimp rate during drying DCf (%) = ((L0f−L1f) / L1f) × 100
Crimp rate HCf (%) when wet = (L0f′−L1f ′) / L1f ′) × 100

<Floating height of the side that forms the slit>
After leaving the fabric in an atmosphere of temperature 20 ° C. and humidity 65% RH for 24 hours (dried state) and after applying water by spraying so that the moisture content of the fabric is 70% (wet state), The rising height of the side forming the slit portion was measured.

<Unit weight>
The basis weight of the fabric was measured according to JIS L1018 8.4.2.

[Example 1]
Using a 28-gauge tricot knitting machine, a full set of polyethylene terephthalate false twisted crimped yarn with a total fineness of 84 dtex / 72 fil was passed through the back heel, and the polyethylene terephthalate false twisted crimped yarn with a total fineness of 84 dtex / 72 fil Non-crimped polyethylene terephthalate filament yarn is passed through the middle heel in this order with 3in3in1out, non-crimped polyethylene terephthalate filament is passed through the front heel with 6out1in, back 01-10, middle 10-12, front 10- (23-21) * 4-23- (10-12) * 4 Knitted with a knitting structure. In this knitting structure, a slit is formed at the position of the front (23-21) * 4.
Subsequently, the obtained knitted fabric was subjected to high-pressure dyeing at 130 ° C. and then subjected to a dry heat setting at 160 ° C. as a final set. The basis weight of the obtained knitted fabric was 181 g / m ² . Further, as shown in FIG. 1, the part using the non-crimped polyethylene terephthalate filament yarn for the middle ridge was the part 1, and the part using the polyethylene terephthalate false twisted crimped thread for the middle heel was the part 2. Further, the part 1 and the part 2 are arranged in a stripe shape with the slit part as a boundary, and the part 2 using the crimped yarn is contracted from the part 1 at the time of dyeing, so that the part 1 out of both sides forming the slit part. As a result, a three-dimensional mesh-structured fabric was obtained in which the side where the slid is raised and the slit part is three-dimensionally open.
In such a fabric, the length direction of the slit portion was the same as the warp direction of the fabric, and the lifting height of one side that was floating was 4 mm in the dry state and 4 mm in the wet state. Moreover, the length of the slit part was 4 mm.
Such a fabric did not transmit light and was excellent in air permeability. Subsequently, when the sports garment and the inner garment were sewn and worn using the fabric, both the breathability and the permeability were excellent.

[Example 2]
A composite fiber was obtained in the same manner as in Example 1 of JP-A-2006-112009. That is, nylon 6 having an intrinsic viscosity [η] of 1.3 and modified polyethylene terephthalate copolymerized with 2.6 mol% of 5-sodium sulfoisophthalic acid having an intrinsic viscosity [η] of 0.39, respectively. After melting at 270 ° C. and 290 ° C. and forming extruded side-by-side type composite fibers at a discharge rate of 12.7 g / min, cooling and solidifying, and applying an oil agent, the yarn was fed at a speed of 1000 m / min and a temperature of 60 ° C. Was then preheated by a preheating roller, followed by stretching heat treatment between the preheating roller and a heating roller heated to a temperature of 150 ° C. at a speed of 3050 m / min, and wound to obtain an 84 dtex / 24 fil composite fiber.
Next, in Example 1, the same procedure as in Example 1 was performed except that the composite fiber was used instead of the non-crimped polyethylene terephthalate filament yarn.
The composite fiber (crimping was expressed by the dyeing process) was taken out from the fabric, and the difference in crimp rate (DCf−HCf) (%) between dry and wet was measured and found to be 42%. That is, the composite fiber was a fiber whose apparent length was increased by decreasing the crimp rate when wet.
In the fabric thus obtained, the basis weight is 185 g / m ² , and the slit is not three-dimensionally open in the dry state as shown in FIG. 3 and has a flat appearance (lifting height 0.2 mm, slit portion length 4 mm). However, in the wet state, the crimp rate of the composite fiber (crimped fiber) arranged in the middle fold decreased (the apparent length became longer), and as a result, the portion 1 of both sides forming the slit portion The located side floated (floating height 3.5 mm), and the slit part opened three-dimensionally.
Such a fabric did not transmit light and was excellent in air permeability. Subsequently, when the sports garment and the inner garment were sewn and worn using the fabric, both the breathability and the permeability were excellent.

[Example 3]
Example 1 was the same as Example 1 except that the composite fiber used in Example 2 was used instead of the crimped polyethylene terephthalate filament yarn.
The composite fiber (crimping was expressed by dyeing) was taken out from the fabric, and the difference in crimp rate (DCf-HCf) (%) between dry and wet was measured and found to be 43%. That is, the composite fiber was a fiber whose apparent length was increased by decreasing the crimp rate when wet.
In the fabric thus obtained, the basis weight was 185 g / m ² , and the slits were three-dimensionally opened in the dry state as shown in FIG. 4 (lifting height 3.8 mm, slit portion length 4 mm), In the wet state, the opened slit portion was closed, and a flat appearance (floating height 0.2 mm) was obtained.
Such a fabric did not transmit light and was excellent in air permeability. Subsequently, when the sports garment and the inner garment were sewn and worn using the fabric, both the breathability and the permeability were excellent.

[Example 4]
A covering yarn was obtained in the same manner as in Example 2 of JP-A-2005-36374. That is, 49.8 parts by weight of polybutylene terephthalate as a hard segment and 50.2 parts by weight of a polyoxyethylene glycol having a number average molecular weight of 4000 as a soft segment were melted at 230 ° C. from a predetermined spinneret. Extrusion was performed at a discharge rate of 3.05 g / min. The polymer was drawn through two godet rolls at 705 m / min and further wound at 750 m / min (winding draft 1.06) to obtain a water-absorbing self-stretching yarn having elasticity of 44 dtex / 1 filament. The swelling rate of the water-absorbing self-stretching yarn in the fiber axis direction when wet was 10%, and the boiling water shrinkage rate was 8%.
Next, a polyethylene terephthalate multifilament yarn (33 dtex / 12 filament) having a boiling water shrinkage of 10% and a wet expansion rate of 1% or less as a sheath yarn is used as the core yarn. A covering yarn (composite yarn) was obtained at a draft rate of 30% (1.3 times) and a sheath yarn covering number of 350 times / m (Z direction).
Next, in Example 2, the same procedure as in Example 2 was performed except that the covering yarn was used instead of the composite fiber.
The resulting knitted fabric has a basis weight of 193 g / m ² and has a flat appearance with a slit that is not three-dimensionally open in the dry state as shown in FIG. However, in the wet state, as a result of the self-stretching of the covering yarn arranged on the middle ridge, the side where the part 1 is located out of both sides forming the slit part is lifted (lifting height is 4.2 mm), and the slit part is Opened in three dimensions.

[Comparative Example 1]
In Example 1, the same procedure as in Example 1 was used, except that only 84 dtex / 72 non-crimped polyethylene terephthalate filament yarns were used for the middle kite.
The obtained knitted fabric has a basis weight of 181 g / m ² , and there is no region A and region B, and the slit does not open three-dimensionally in a dry state or a water absorption state (lifting height 0.2 mm, slit part) 4 mm), and a flat appearance as shown in FIG.

  ADVANTAGE OF THE INVENTION According to this invention, the fabric which has a slit part, and has both air permeability and permeation-proof, and the textiles using this fabric are provided, The industrial value is very large.

1 part 1
2 part 2
3 Slit part 4 Side that floats out of both sides that form slit part 5 Side that does not float out of both sides that form slit part 6 Slit part

Claims (11)

It is a fabric having a slit portion on the surface, and when one side of the two sides forming the slit portion is three-dimensionally raised from the other side, the slit portion is three-dimensionally opened , and the following ( A fabric having a slit, which satisfies at least one of the requirements 1) to (3) .
(1) After the fabric is left in an atmosphere of a temperature of 20 ° C. and a humidity of 65% RH for 24 hours, one side of both sides forming the slit portion is three-dimensionally raised more than the other side.
(2) After water is applied to the fabric so that the moisture content is 70%, one side of both sides forming the slit portion is three-dimensionally raised than the other side.
(3) The slit part is in a state after the fabric is left in an atmosphere of a temperature of 20 ° C. and a humidity of 65% RH for 24 hours and in a state after water is applied to the fabric so that the moisture content becomes 70%. The floating state of the side to be formed changes. The fabric having a slit portion according to claim 1, wherein the length direction of the slit portion is the same as the warp direction or the weft direction of the fabric . The fabric which has a slit part of Claim 1 or Claim 2 whose length of the said slit part exists in the range of 2-20 mm. The fabric which has a slit part in any one of Claims 1-3 whose floating height of one side which floats among the both sides which form a slit part is in the range of 0.5-10 mm. The fabric is composed of a water-absorbing self-stretching yarn and a non-self-stretching yarn, has a region 1 composed of a water-absorbing self-stretching yarn and a non-self-stretching yarn, and a region 2 composed of only a non-self-stretching yarn; The fabric having a slit portion according to any one of claims 1 to 4, wherein the slit portion is formed at a boundary between the portion 1 and the portion 2.
  However, the water-absorbing self-stretching yarn and the non-self-stretching yarn are yarns defined below. That is, using a rewind frame with a frame circumference of 1.125 m and applying a load of 0.88 mN / dtex (0.1 g / de) and rewinding at a constant speed, a number of turns: 10 times of skein was made and cut off. The yarn is allowed to stand for 24 hours in an environment of a temperature of 20 ° C. and a humidity of 65 RH%. This is 1.76 mN / dtex (200 mg / de) for an inelastic yarn and 0.0088 mN / dtex (1 mg / de) for an elastic yarn. The yarn length (mm) measured by applying a load of de) is defined as the yarn length at the time of drying. The yarn is immersed in water at a water temperature of 20 ° C. for 5 minutes and then pulled up from the water. As in the case of drying, the yarn is 1.76 mN / dtex (200 mg / de) in the case of an inelastic yarn, and in the case of an elastic yarn, it is 0.7. The yarn length (mm) measured by applying a load of 0088 mN / dtex (1 mg / de) is defined as the wet yarn length. The inelastic yarn is a yarn having a breaking elongation of 200% or less, and the elastic yarn is a yarn having a breaking elongation higher than 200%. And a thing whose swelling rate of the fiber axis direction calculated | required by the following formula is 5% or more is defined as a water absorption self-extension thread | yarn. On the other hand, those having a swelling rate of less than 5% are defined as non-self-stretching yarns.
Swell ratio (%) = ((wet yarn length) − (dry yarn length)) / (dry yarn length) × 100 The fabric having a slit portion according to claim 5, wherein the water-absorbing self-elongating yarn is a polyether ester fiber made of a polyether ester elastomer having polybutylene terephthalate as a hard segment and polyoxyethylene glycol as a soft segment. The fabric having a slit portion according to claim 5, wherein the water-absorbing self-extending yarn is a composite fiber in which two-component polymers having different hygroscopic properties are joined in a side-by-side manner. The fabric having a slit portion according to any one of claims 5 to 7, wherein the non-self-extending yarn is a polyester fiber or an elastic fiber. The fabric having a slit portion according to any one of claims 1 to 8, wherein the slit portion is formed by knitting structure, cutting, or fiber dissolution. The fabric which has a slit part in any one of Claims 1-9 in which a metal oxide or a carbon particle is contained in a fabric. An outer garment, a sports garment, an inner garment, a shoe material, a medical / hygiene product such as a diaper or a nursing sheet, a bedding, a chair, and the like, comprising the fabric according to claim 1. Any textile product selected from the group consisting of skin materials such as sofas, carpets, car seats, and interior goods.