JP7003499B2 - Multi-layered woven fabric - Google Patents

Description

The present invention relates to a multi-layered woven fabric having particularly excellent breathability but also having ultraviolet shielding properties which are contradictory performances and having stable physical properties as clothing.

Conventionally, as a means for greatly improving the air permeability of a woven fabric, weaving is performed by controlling the density by the woven fabric structure or partially using threads that are soluble in a specific solvent, and the threads are woven during the dyeing process. A method of intentionally creating a void by dissolving (see Patent Document 1) and a method of physically making a hole by laser punching or the like have been proposed, and the hot air and moisture in the clothes are effectively removed from the system. It has become possible to release to. However, with these conventional methods, it has been difficult to produce an ultra-highly breathable UV-shielding woven fabric having a breathability of more than 200 cc / cm ² · sec / while maintaining stable physical properties and having UV-shielding performance.

For example, in order to obtain an ultra-highly breathable material, a method of studying a multi-layer laminated structure using partially fused false twisted yarn has been proposed (see Patent Document 2), but in the woven fabric of this proposal, even in the examples. The air permeability is slightly higher than 100 cc / cm ² · sec.

Japanese Unexamined Patent Publication No. 2011-089231 Japanese Unexamined Patent Publication No. 2014-210988

As described above, there has been a method for producing a highly breathable woven fabric, but in recent years, there has been an increasing demand for further improvement in wearing comfort, and further improvement in woven fabric is required.

Therefore, an object of the present invention is to pay particular attention to maximization of air permeability, and to provide a multi-layered woven fabric having ultraviolet shielding performance and stable physical properties as clothing.

The present invention is to solve the above-mentioned problems, and in the multi-layered woven fabric of the present invention, the polyester false twist fusion yarn is used as a warp yarn and / or a part of a weft yarn, or a whole warp yarn and a weft yarn. It is a multi-layered woven fabric used as a part of the above, and has an air permeability of more than 200 cc / cm ² · sec, an ultraviolet shielding index (UPF) of 15 or more, and a cover factor (CF value) in the range of 2500 to 3000. It is a multi-layered woven fabric characterized by a snag of grade 3 or higher and a stitch slip-off value of 2.5 mm or less.

According to a preferred embodiment of the multi-layered woven fabric of the present invention, a thread that is completely dissolved by water or a solvent is used for a part of the warp and weft threads, and the warp and weft threads of the thread are used. The voids formed at the intersections of the threads are composed of a multi-woven structure and do not overlap on the front and back surfaces that are adjacent to each other.

Further, according to a preferred embodiment of the multi-layered woven fabric of the present invention, the vertical structure of the multi-layered woven fabric is an empty feather structure, and a thread completely dissolved by water or a solvent is used as a part of the weft yarn. The voids formed by the intersections of the empty feathers of the warp structure and the melted weft threads are composed of a multi-woven structure and do not overlap on the front and back surfaces of each other.

Further, according to a preferred embodiment of the multilayer structure woven fabric of the present invention, the polyester-based false twist fusion yarn has an untwisted portion I having a twist in the false twist direction and a twist in the direction opposite to the false twist direction. The over-untwisted portion II and the untwisted untwisted crimped portion III having no twist are untwisted portion I-crimped portion III-over untwisted portion II-crimped portion III along the longitudinal direction of the yarn. It is that they are arranged repeatedly in the order of.

According to the present invention, it is possible to obtain a multi-layered woven fabric that exerts a ventilation effect on the entire fabric, which dramatically discharges hot air and moisture in clothes to the outside of the system when worn, as compared with conventional breathable woven fabrics.

Further, according to the present invention, a multi-layered woven fabric having a shielding effect even against ultraviolet rays harmful to the human body and having no problem when sewn and worn as clothing can be obtained, so that it is comfortable and safe. It is possible to provide a comfortable wearing environment.

FIG. 1 is a cross-sectional view schematically illustrating the structure of the multi-woven structure used in the present invention as a double-structured structure. FIG. 2 is a cross-sectional view schematically illustrating the structure of another multi-woven structure used in the present invention as a double-structured structure.

The multi-layered woven fabric of the present invention is a multi-layered woven fabric in which the partially fused false twist polyester fibers as described above are used for a part of warp yarns and / or weft yarns, or all warp yarns and a part of weft yarns. The air permeability is larger than 200cc / cm ² · sec, the UV shielding index (UPF) is 15 or more, the CF value is in the range of 2500 to 3000, the snag is 3rd grade or more, and the stitch slippage value is 2.5mm. The following multi-layered woven fabric.

The present invention has been diligently studied the above-mentioned problems, that is, an ultra-highly breathable fabric having maximum air permeability, ultraviolet shielding performance, and stable physical properties. As a result, at least adjacent warp yarns are used using polyester-based partially fused false twist yarns. A fiber yarn in which a part of the warp yarn and a part of the weft yarn are dissolved in water and / or a solvent in which both the warp yarn and the weft yarn are dissolved. The fiber yarns of the multi-layered woven fabric made of the above are dissolved and removed in water and / or a solvent to open a gap in the fiber in which the warp yarn is dissolved or the wing portion and the interlaced portion of the fiber in which the weft yarn is dissolved. It was clarified that by arranging so that the voids do not overlap on the adjacent surfaces in the multi-layered structure, it has a dramatic improvement in air permeability and UV shielding performance, and can maintain stable physical properties. be.

In the present invention, as described above, a polyester-based partially fused false twist yarn is used for a part of the warp yarn and / or the weft yarn of the multi-layered woven fabric, or the whole warp yarn and a part of the weft yarn.

Further, the "partial" used in the present invention refers to a state in which at least one of the threads arranged in the warp or weft threads is used, and the number of arranged threads is 50% from the viewpoint of breathability. The above is preferable, and more preferably 70% or more is used.

As the material polymer of the polyester fiber, polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate and the like are preferably used.

Furthermore, in addition to polyester fibers, polyamides such as nylon 6 and nylon 6,6, synthetic fibers such as polyacrylic, polypropylene and polyvinyl chloride, semi-synthetic fibers such as acetate and rayon, wool, silk, cotton and linen, etc. Natural fiber can be used together.

As the form of the polyester-based partially fused false twist yarn, it is possible to use a continuous multifilament yarn composed of a plurality of single fibers, in which the cross section of the single fibers is uniform in the length direction or has a thickness. , A round cross section, a triangular cross section, a Y type, an X type, an eight-leaf type, a hollow type, and an indeterminate flat cross section can also be used.

The above-mentioned polyester fibers include ultraviolet absorbers such as benzotriazoles, antioxidants such as hindered phenols, various pigments such as titanium oxide and iron oxide, barium sulfate, zinc oxide, and cesium oxide, depending on the intended use. It can contain a lubricant typified by metal soap, such as a functional additive containing calcium carbonate, silver ions and the like.

The polyester-based partially fused yarn used in the present invention has an untwisted portion I having a twist in the false twist direction, an over-untwisted portion II having a twist in the direction opposite to the false twist direction, and no twist. It is a preferred embodiment that the untwisted crimped portion III is repeatedly arranged in the order of I-III-II-III along the longitudinal direction of the yarn.

The false twisting machine to be used may be any false twisting machine such as a pin type, a belt nip type and a friction type, and may be a 1-heater processing type or a 2-heater processing type. In order to stably produce a processed yarn having a good fused form, it is preferable to perform false twisting with precise and stable tension adjustment of the twisted portion and the untwisted portion. From the viewpoint of this tension control, a belt nip type false twister is preferably used.

The temperature of the false twist heater is preferably 220 ° C. or higher and 260 ° C. or lower for the contact type heater. If the false twist heater temperature is less than 220 ° C., the degree of fusion may decrease and the fusion may be insufficient. When the false twist heater temperature exceeds 260 ° C., the degree of fusion between the filaments increases, and threads having a rough and hard feeling tend to be formed. The false twist heater temperature cannot be strictly limited because it needs to be appropriately changed depending on the heater equipment, the processing speed, and the type of fiber polymer used.

Since the polyester-based partially fused yarn used in the present invention has a partially converged form, it has a crisp feeling and a refreshing feeling, and its single fiber fineness, number of filaments and total fineness are various aspects. Can be used.

In the present invention, the fibers used for a part of the warp yarn and a part of the weft yarn and dissolved in water or a solvent include, for example, water-soluble fibers such as polyvinyl alcohol-based fibers, isophthalic acid, and 5-sodium sulfoisophthal. Polyester-based fibers in which a third component such as acid and metoxypolyoxyethylene glycol are copolymerized, and easily alkaline-soluble fibers such as polylactic acid-based fibers can be used.

In addition, these fibers can be used alone or as a composite of two or more kinds. When these fibers are used alone, they can be used by arranging, aligning, arranging, aligning, synthesizing and twisting two or more of these fibers alone.

The total fineness of the yarn made of melted fibers is preferably the same as that of the yarn made of insoluble fibers. If threads having different total fineness are used in the warp yarn, unevenness may occur in the warp-making beam and the yarn may not be wound neatly, or it may be difficult to control the warp yarn tension on the loom. Therefore, it is preferable to match the total fineness of both as much as possible, but if there is no problem in production, the total fineness of the yarn made of melted fibers can be any fineness.

The multi-layered woven fabric is a fabric structure necessary for shielding ultraviolet rays while maintaining the air permeability, and in the case of a structure capable of maintaining the air permeability, a structure having three or more layers is also possible, but from the viewpoint of cost. A two-layer structure is a preferred embodiment.

The air permeability of the multi-layered woven fabric is preferably larger than 200 cc / cm ² · sec from the viewpoint of wearing comfort.

Further, the ultraviolet shielding index (UPF) is preferably 15 or more in order to shield ultraviolet rays from sunlight, and more preferably 20 or more, so that wearing safety can be further enhanced.

Further, the cover factor (CF value) is in the range of 2500 to 3000, which is a necessary requirement for maintaining various performances and physical properties described in the present specification. If it deviates from this range, a predetermined performance may not be obtained, and a range of 2600 to 2900 is more preferable.

Snag is a generally necessary physical characteristic item for clothing, and it is a necessary requirement for quality assurance to have a grade 3 or higher.

The seam slip-off value is a necessary requirement for clothing to prevent damage even when a load is applied to the seam, and is generally within 3 mm (117 N load). However, in this patent, in consideration of further safety, 2. It is preferably within 5 mm (117 N load), more preferably within 2.0 mm (117 N load).

The ratio of the polyester false twist fused yarn and the melted fiber yarn can be arbitrarily set in consideration of various performances, and when the total fineness of both is the same, the ratio is preferably 10: 1 to 10: 4. ..

FIG. 1 is a cross-sectional view of a warp or weft yarn schematically illustrating the structure of the multi-woven structure used in the present invention as a double-structured structure.

In FIG. 1, the double-structured structure is composed of insoluble fiber threads A such as polyester false twist fused yarn and meltable fiber threads B, and has a surface X of the double-structured structure and a double structure. It is shown that the fibrous threads B to be melted do not overlap on the back surface Y of the structure. In a multi-woven structure having a double structure or more, it is a preferable embodiment to arrange the fibrous threads B that are melted on adjacent surfaces such as X and Y so as not to overlap each other.

Further, FIG. 2 is a cross-sectional view of a warp yarn schematically illustrating the structure of another multi-woven structure used in the present invention as a double-structured structure.

In FIG. 2, the double-structured structure is composed of insoluble fiber threads A such as polyester false twist fused yarns and a portion C having no fiber threads as an empty wing structure, and is the surface of the double-structured structure. In X and Y on the back surface of the double-structured structure, the portion C having no fiber thread having an empty feather structure is shown to be non-overlapping. In a multi-structured structure having a double-structured structure or more, the front surface X of the double-structured structure and the adjacent surfaces such as the back surface Y of the double-structured structure do not overlap with each other. It is a preferable embodiment to arrange them in such a manner.

Next, a method for producing the multilayer structure woven fabric of the present invention will be described.

In the method for producing a multi-layered woven fabric of the present invention, at least two or more adjacent warp yarns are grouped together and spaced apart from each other, and / or a part of the warp yarn and a part of the weft yarn are water and /. Alternatively, a woven fabric consisting of fibrous yarns that dissolve in a solvent that dissolves both warp and weft yarns is treated with water and / or a solvent to dissolve and remove the fibrous yarns, and the fibers that dissolve the warp yarns. Alternatively, it is characterized in that a gap is opened in the intersection of the empty wing portion and the fiber in which the weft yarn is dissolved, and the gap does not overlap on the adjacent surfaces in the multilayer structure structure.

The multi-layered woven fabric of the present invention is composed of a multi-layered structure including at least two layers of a front surface layer and a back surface layer. For example, twill weave, satin weave, various double weaves, multiple weaves, and a deformed structure thereof can be used, and any structure can be selected for the structure of the front surface layer and the back surface layer.

A fiber (thread) that dissolves in water is a water-soluble fiber such as a polyvinyl alcohol-based fiber, and the water-soluble fiber is used for at least one warp yarn and at least one weft yarn, and is dissolved and removed in water. By doing so, a hole penetrating from the front surface to the back surface of the fiber is formed in the entangled portion of the warp and weft threads. With respect to the warp yarn, by using the empty feather structure, it is possible to form a gap without using the above-mentioned water-soluble fiber.

The water temperature of the water used is preferably 20 ° C. or higher, but it is preferable to dissolve and remove the water at a temperature of 50 ° C. or higher from the viewpoint of dissolution efficiency.

Further, as the solvent used in the present invention, sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, sodium carbonate and the like are used for polyester fibers which are easily alkali-soluble fibers and polylactic acid fibers. It is an alkaline substance solution of the above, and it is a preferable embodiment to use it as an alkaline aqueous solution. In particular, it is preferably an alkaline aqueous solution containing sodium hydroxide, and it is preferable to dissolve and remove the alkaline aqueous solution at a bath temperature of 50 ° C. or higher.

Further, the water-soluble fiber can be dissolved and removed in an alkaline aqueous solution in combination with an alkaline substance. The concentration of the alkaline substance used is preferably 0.1% or more for sodium hydroxide, and more preferably 1% or more from the viewpoint of accelerating the dissolution time.

The multi-layered woven fabric of the present invention shall be treated with an antistatic agent, a water absorbent, a moisture absorbent, a water repellent, an oil repellent, an antifouling agent, a colorant, a brightener, etc., as long as the effects of the present invention are not impaired. Can be done.

The multi-layered woven fabric of the present invention can be used as clothing such as sportswear, homewear, coats, blouson, blouses, shirts, skirts, slacks, indoor athletic wear, pajamas, sleepwear, underwear, office wear, work clothes, food lab coats, and nursing care. It is preferably used as white coat, patient clothes, nursing clothes, school clothes, kitchen clothes and the like. It is also used as miscellaneous goods such as aprons, towels, gloves, mufflers, socks, hats, shoes, sandals, and bags. Further, as interior goods, it is preferably used for curtains, kotatsu covers, sofa covers, cushion covers, sofa side areas, tablecloths and the like. Further, as bedding products, it is preferably used for duvet side fabrics, sheets, duvet covers, pillowcases and the like.

Next, the multilayer structure woven fabric of the present invention will be described more specifically by way of examples. The following methods were used as various evaluation methods in the examples.

(Breathability):
The amount of air (cc / cm ² · sec) passing through the test piece was determined using a Frazier type tester by the method specified in JIS-L1096: 2010 Breathability A method (Frazil type method).

(Ultraviolet shielding index (UPF) evaluation):
The test piece is irradiated with a spectrophotometer or a spectrophotometer at 280 nm to 400 nm by the method specified by the Australian / New Zealand standard 4399, the transmittance is measured, the UPF value is calculated, and the measurement is performed at least 4 times. Was taken as the UPF value.

(Cover factor (CF value)):
As an index of the coverage of the woven fabric, the apparent total fineness and density of the threads taken out from the woven fabric are calculated by applying the following formula.
-CF value = √ {Vertical thread apparent fineness (dTex) x number of warp threads (thread / 2.54 cm) + √ {weft thread apparent fineness (dTex)} x number of weft threads (thread / 2.54 cm)
For the number of threads, the sum of the front structure and the back structure is used.

(Measuring method of apparent fineness):
JIS-L1096: 2010 The method specified in the apparent fineness A method of threads in woven fabrics was used.

(Density measurement method):
JIS-L1096: 2010 Woven Density The density of the woven fabric is calculated using the sum of the numbers in the structure of each layer by the method specified in the A method.

(Snag):
JIS-L1058: 2011 The physical characteristics of the dough were graded by the method specified in the A method (ICI type mace tester method).

(Sliding stitches):
JIS-L1096: 2010 The set load was set to 117N by the method specified in the seam slip-off method B method.

(Example 1)
For the warp yarn, a partially fused false twist polyester yarn (A) of 84dTex / 36 filament and an easily alkali-soluble polyester fiber yarn (B) obtained by copolymerizing 5-sodium sulfoisophthalic acid of 84dTex / 24 filament are used. , 10 each: 2 are arranged alternately, and as shown in FIG. 1, the polyester fiber threads B are prepared so as not to overlap with the front structure and the back structure.

Further, an easily alkali-soluble polyester fiber yarn (B) obtained by copolymerizing a partially fused false twist polyester yarn (A) of 84dTex / 36 filament and 5-sodium sulfoisophthalic acid of 84dTex / 24 filament with a weft yarn. ) Are arranged alternately at a ratio of 10: 2, and the vertical density is 170 / 2.54 cm so that the polyester fiber threads B do not overlap in the front and back structures, as in the vertical arrangement. A double woven fabric having a density of 170 yarns / 2.54 cm and a plain weave with both front and back textures was woven.

Next, after scouring, drying and intermediate setting according to a conventional method, treatment in a bath at a temperature of 90 ° C. for 30 minutes in a solution adjusted to a concentration of sodium hydroxide at 1% was carried out for easy alkali solubility. The polyester fibers are completely dissolved, and then dyed, dried and finished according to a conventional method. The vertical density is 155 / 2.54 cm, the horizontal density is 148 / 2.54 cm, the CF value is 2777, and the air permeability is high. A processed cloth (woven fabric) having a double woven structure structure with 210 cc / cm ² · sec, UPF evaluation of 20, stitch slippage of 1.7 mm / horizontal 1.6 mm, and snag of grade 3 was obtained. The results are shown in Table 1.

(Example 2)
Partially fused false twist polyester yarns (A) of 84dTex / 36 filaments were arranged in the warp yarn at a ratio of 10: 2 in the empty feather structure, and the empty feather portion (C) was the surface structure as shown in FIG. And prepare so that they do not overlap with the back organization. In the weft yarn, a partially fused false twist polyester yarn (A) of 84dTex / 36 filament and an easily alkali-soluble polyester fiber yarn (B) obtained by copolymerizing 5-sodium sulfoisophthalic acid of 84dTex / 24 filament are applied. 10 threads: 2 threads are arranged alternately, and as shown in FIG. 1, the vertical density is 170 lines / 2.54 cm and the horizontal density is 170 lines so that the thread B does not overlap between the front structure and the back structure. A double woven fabric having a / 2.54 cm front structure and a back structure, which is a plain weave, was woven.

Next, after scouring, drying and intermediate setting according to a conventional method, treatment in a bath at a temperature of 90 ° C. for 30 minutes in a solution adjusted to a concentration of sodium hydroxide at 1% was carried out, and the polyester was easily alkaline-soluble. The fibers are completely dissolved, then dyed, dried and finished according to a conventional method. The vertical density is 160 lines / 2.54 cm, the horizontal density is 145 lines / 2.54 cm, the CF value is 2795, and the air permeability is 205 cc /. A processed cloth (woven fabric) having a double woven structure structure having a cm of ² · sec, an UPF evaluation of 20, a seam slippage of 1.8 mm in length / 1.5 mm in width, and a snag of grade 3 was obtained. The results are shown in Table 1.

(Comparative Example 1)
Ten easily alkali-soluble polyester fiber yarns (B) obtained by copolymerizing 84dTex / 36 filament polyester wooly yarn (A) and 84dTex / 24 filament 5-sodium sulfoisophthalic acid in the warp yarn, respectively. : Arrange them alternately at a ratio of two, and prepare so that the yarn B does not overlap with the front structure and the back structure as shown in FIG.

In the weft, 84dTex / 36 filament polyester wooly yarn and 84dTex / 24 filament 5-sodium sulfoisophthalic acid are copolymerized with each other in an easily alkaline-soluble polyester fiber yarn at a ratio of 10: 2. As with the vertical arrangement, the front and back structures are plain weave with a vertical density of 170 lines / 2.54 cm and a horizontal density of 170 lines / 2.54 cm so that the threads B do not overlap with the front and back structures. A double weave was woven. Next, after scouring, drying and intermediate setting according to a conventional method, a bath treatment was carried out at a temperature of 90 ° C. for 30 minutes in a solution adjusted to a concentration of sodium hydroxide at 1%, and the polyester was easily alkaline-soluble. The fibers are completely dissolved, then dyed, dried and finished according to a conventional method. The vertical density is 155 lines / 2.54 cm, the horizontal density is 147 lines / 2.54 cm, the CF value is 2765, and the air permeability is 100 cc /. A processed cloth (woven fabric) having a double woven structure structure with cm ² · sec, UPF evaluation of 25, stitch slippage of 1.5 mm in length / 1.6 mm in width, and snag of second grade was obtained. The results are shown in Table 1.

(Comparative Example 2)
For the warp yarn, a partially fused false twist polyester yarn (A) of 84dTex / 36 filament and an easily alkali-soluble polyester fiber yarn (B) obtained by copolymerizing 5-sodium sulfoisophthalic acid of 84dTex / 24 filament are used. , 10 threads each: 2 threads are arranged alternately, and as shown in FIG. 1, the threads B are prepared so as not to overlap with the front structure and the back structure.

10: 2 easily alkaline soluble polyester fiber yarns obtained by copolymerizing a partially fused false twist polyester yarn of 84dTex / 36 filament and 5-sodium sulfoisophthalic acid of 84dTex / 24 filament in weft yarn. As with the vertical arrangement, the surface structure with a vertical density of 150 lines / 2.54 cm and a horizontal density of 150 lines / 2.54 cm is also arranged so that the threads B do not overlap with the front structure and the back structure. The back structure is also a plain weave, which is a double woven fabric.

Next, after scouring, drying and intermediate setting according to a conventional method, a bath treatment was carried out at a temperature of 90 ° C. for 30 minutes in a solution adjusted to a concentration of sodium hydroxide at 1%, and the polyester was easily alkaline-soluble. The fibers are completely dissolved, then dyed, dried and finished according to a conventional method. The vertical density is 140 lines / 2.54 cm, the horizontal density is 128 lines / 2.54 cm, the CF value is 2456, and the air permeability is 230 cc /. A processed cloth (woven fabric) having a double woven structure with a cm of ² · sec, an UPF evaluation of less than 10, a vertical slip of 3.2 mm / horizontal 2.8 mm, and a snag of the second grade was obtained. The results are shown in Table 1.

(Comparative Example 3)
A partially fused false twist polyester yarn of 84dTex / 36 filament is used for the warp yarn, and a partially fused false twist polyester yarn of 84dTex / 36 filament is used for the weft yarn to form a double structure, and the vertical density is 170 threads. A double woven fabric having a horizontal density of 170 yarns /2.54 cm and a plain weave with a front structure and a back structure of /2.54 cm was woven. Next, after scouring, drying and intermediate setting according to a conventional method, a bath treatment was carried out at a temperature of 90 ° C. for 30 minutes in a solution adjusted to a concentration of sodium hydroxide at 1%, and the polyester was easily alkali-soluble. The fibers are completely dissolved, then dyed, dried and finished according to a conventional method. The vertical density is 185 / 2.54 cm, the horizontal density is 177 / 2.54 cm, the CF value is 3317, and the air permeability is 120 cc /. A processed cloth (woven fabric) having a double woven structure structure with cm ² · sec, UPF evaluation of 25, stitch slippage of 1.0 mm or less in vertical / horizontal direction, and snag of grade 4 was obtained. The results are shown in Table 1.

(Comparative Example 4)
In the warp yarn, a partially fused false twist polyester yarn (A) of 84dTex / 36 filament and an easily alkali-soluble polyester fiber yarn (B) obtained by copolymerizing 5-sodium sulfoisophthalic acid of 84dTex / 24 filament are used. , 10 threads each: 2 threads are arranged alternately, and the threads (B) are prepared so as to overlap each other in the front structure and the back structure.

10: 2 easily alkali-soluble polyester fiber yarns obtained by copolymerizing a partially fused false twist polyester yarn of 84dTex / 36 filament and 5-sodium sulfoisophthalic acid of 84dTex / 24 filament in weft yarn. The table has a vertical density of 170 lines / 2.54 cm and a horizontal density of 170 lines / 2.54 cm so that the threads (B) overlap the front and back structures in the same manner as in the vertical arrangement. A double woven fabric with a plain weave in both the structure and the back structure was woven.

Next, after scouring, drying and intermediate setting according to a conventional method, treatment in a bath at a temperature of 90 ° C. for 30 minutes in a solution adjusted to a concentration of sodium hydroxide at 1% was carried out for easy alkali solubility. The polyester fibers are completely dissolved, and then dyed, dried and finished according to a conventional method. The vertical density is 155 / 2.54 cm, the horizontal density is 148 / 2.54 cm, the CF value is 2777, and the air permeability is high. A processed cloth (woven fabric) having a double woven structure structure with 250 cc / cm ² · sec, UPF evaluation of less than 10, stitch slippage of 1.7 mm / horizontal 1.6 mm, and snag of grade 3 was obtained. The results are shown in Table 1.

実施例１と２においては、通気度、ＵＰＦ値、縫目滑脱、スナッグの全てにおいて良好な結果であり、着用快適性を向上させる超高通気紫外線遮蔽織物を得ることができた。

In Examples 1 and 2, good results were obtained in all of the air permeability, UPF value, stitch slippage, and snag, and it was possible to obtain an ultra-highly breathable UV-shielding woven fabric that improves wearing comfort.

In Comparative Example 1, although the UPF value and the stitch slippage were excellent, satisfactory results were not obtained in terms of air permeability and snag.

In Comparative Example 2, although the air permeability was excellent, satisfactory results were not obtained in the UPF value, stitch slippage, and snag.

In Comparative Example 3, although the UPF value, stitch slippage and snag were excellent, satisfactory results were not obtained in terms of air permeability.

In Comparative Example 4, although the air permeability, stitch slippage and snag were excellent, satisfactory results were not obtained in the UPF value.

A: Insoluble fiber threads B: Dissolvable fiber threads C: Air-feathered fiber thread-free part X: Front surface of double-structured structure Y: Back surface of double-structured structure

Claims (2)

A multi-layered woven fabric in which polyester false twist fusion yarn is used for a warp yarn and / or a part of a weft yarn, or a whole warp yarn and a part of a weft yarn.
A yarn that is completely dissolved by water or a solvent is used for a part of the warp and weft threads, and the voids formed at the intersections of the melted warp and weft threads are composed of a multi-woven structure. The front and back sides do not overlap,
or,
The vertical structure of the woven fabric is defined as an empty feather structure, and a thread completely dissolved with water or a solvent is used as a part of the weft yarn, and the yarn is formed at the intersection of the empty feather portion of the vertical structure and the dissolved weft yarn. The voids are composed of a multi-woven structure and do not overlap on the front and back surfaces.
Has any of the structures of
The air permeability is larger than 200cc / cm ² · sec, the ultraviolet shielding index (UPF) is 15 or more, the cover factor (CF value) is in the range of 2500 to 3000, the snag is grade 3 or higher, and the stitch slippage is 2.5 mm. A multi-layered woven fabric characterized by: The polyester false twist fusion yarn has an untwisted portion I having a twist in the false twist direction, an over-untwisted portion II having a twist in the direction opposite to the false twist direction, and a non-twisted crimped portion having no twist. The feature III is a false twist fusion yarn in which the untwisted portion I, the crimped portion III, the over untwisted portion II, and the crimped portion III are repeatedly arranged in the order of the longitudinal direction of the yarn. The multi-layered woven fabric according to claim 1 .

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