JPH11131336A - Production of water-proof woven fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a water-proof woven fabric which is not too stiff, even when produced into a high density woven fabric, and which simultaneously satisfies soft touch, tension, firmness and waterproofness. SOLUTION: This method for predicting a waterproof woven fabric comprises melt-spinning two kinds of polyester filament groups A and B from an identical nozzle at a high speed, blending the polyester filaments groups A and B, weaving the obtained differently shrinkable blended yarns, and subsequently applying a finishing treatment to the woven fabric. In the woven fabric, the sum of the cover factors of the warps and the wefts is >=2200. The polyester filament group A has a hot water shrinkage percentage of >=12% and a single filament fineness of >=1.0 denier. The polyester filament group B has a hot water shrinkage percentage which is lower by >=5% than that of the polyester filament group A, and a signal filament fineness of <=0.6 denier. The whole blended yarns have a Young's modulus of <=90 g/d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a non-coating moisture-permeable waterproof fabric using a yarn made of polyester different shrinkage mixed fiber obtained by a one-step method of high-speed spinning. .

[0002]

2. Description of the Related Art Conventionally, as a material for rain clothing for sports, a polyurethane resin film having a microporous structure is formed on a cloth so that water vapor of sweat is allowed to pass therethrough, but waterproof and moisture permeable which does not allow rain drops to pass through. Materials are used. However, the microporous structure has the drawback of poor air permeability. As a solution to this drawback, non-coating, which uses a high shrinkage yarn and has waterproof and moisture permeable performance on the fabric itself, without using coating or lamination. There is also a method of producing a high-density woven fabric.

[0003] However, the method of using a high shrinkage yarn to increase the density of a woven fabric and improve waterproofness is that the woven fabric becomes coarse and hard.
It has the disadvantage of losing its commercial value, and there is a limit to the improvement in waterproofness due to high density. Therefore, the non-coated waterproof and moisture-permeable high-density woven fabric produced by the conventional method is poor in waterproofness even though excellent in air permeability, and at present it is not satisfactory.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of such circumstances, and even if the density is increased in order to improve waterproofness, the fabric does not become coarse and hard, and a soft texture is obtained. It is an object of the present invention to produce a high-density waterproof fabric that has high hardness, firmness, and satisfies both moisture permeability and waterproofness.

[0005]

The present invention attains the above object and has the following constitution. That is, the present invention relates to a different shrinkage blended yarn in which two kinds of polyester filament groups A and B are spun from the same nozzle at a high speed.
%, Single yarn fineness of 1.0 denier or more, the hot water shrinkage of polyester filament group B is 5% or less lower than that of polyester filament group A, single yarn fineness of 0.6 denier or less, mixed yarn The gist of the present invention is a method for producing a waterproof fabric, characterized in that weaving is performed using a yarn having an overall Young's modulus of 90 g / d or less and finish processing is performed so that the sum of warp yarn cover factors is 2200 or more. Is what you do.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. In the present invention, a waterproof fabric is manufactured by using a polyester different shrinkage mixed fiber yarn drawn by a one-step high-speed spinning method. However, in order to satisfy the present invention, the polyester constituting the mixed fiber yarn is required. The filament group A needs to have a hot water shrinkage of 12% or more and a single yarn fineness of 1.0 denier or more. Hot water shrinkage of filament group A is 12%
A smaller amount is not preferred because shrinkage during dyeing is small, a high-density fabric is hardly obtained, and a high-performance waterproofing effect cannot be obtained. The hot water shrinkage ratio is more preferably 15 to 25%.

A woven fabric using a yarn having a single yarn fineness of 1.0 denier or less is not satisfactory because of a lack of firmness and stiffness even though it has a soft feeling. The fineness of single yarn is more preferably 1.5 to 5 denier. In such a filament group A, 85 mol% or more of the structural unit in the copolymer chain is polyethylene terephthalate, and the remaining 15 mol%
It is preferable to use a filament yarn made of a copolymer polyester in which the structural unit of less than another polyester unit is used, since both of the hot water shrinkage and the thermal stress are large.

The hot water shrinkage of the polyester filament group B must be at least 5% lower than the hot water shrinkage of the polyester filament group A, and the single yarn fineness must be 0.6 denier or less. If the difference in the hot water shrinkage ratio between the polyester filament group A and the polyester filament group B is smaller than 5%, the yarn length difference between the polyester filament group A and the polyester filament group B is reduced, and the swelling feeling is lost in the woven fabric. . The difference in the hot water shrinkage ratio between the polyester filament group A and the polyester filament group B is more preferably 6 to 20%.

If the single-fiber fineness is larger than 0.6 denier, the fabric is not only coarse and hard, but also the waterproof performance tends to decrease. The Young's modulus of the whole mixed yarn must be 90 g / d or less, and if it is larger than 90 g / d, there is a disadvantage that the softness of the fabric is reduced and the commercial value is lost. Young's modulus is 60-85 g / d
Are more preferred.

In the present invention, the woven fabric is subjected to a high-pressure relaxation treatment (110) using a liquid dyeing machine so that the filament group A exhibits a high shrinkage performance and the sum of the cover factors of the warp yarns is 2200 or more. (° C for about 30 minutes). Thus, the waterproof fabric of the present invention having a soft and waterproof property is obtained. The sum of the warp cover factors is 2
Those having a range of 500 to 4000 are more preferable. In addition,
The above hot water shrinkage is measured by measuring the length (A) of the yarn under an initial load of 1 g / d, and then measuring the length of the yarn in free water in boiling water.
After immersion treatment for 0 minutes and natural drying, the length (B) is measured under an initial load of 1 g / d, and the value is calculated by the following equation. Hot water shrinkage (%) = {(AB) / A} × 100

The Young's modulus is measured at a sample length of 30 cm and a tensile speed of 30 cm / min using a constant-speed elongation type tensile tester, draws a load-elongation curve, and is converted by the following equation according to JIS-L1013. Value. Young's modulus (g / d) = P / D P: Load at 100% elongation (g) D: Fineness (denier)

[0012]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. The measurement and evaluation of the performance of the fabric in the examples were performed by the following methods. (1) Soft feeling of fabric, firmness and elasticity The relative evaluation was made according to the following three stages based on a sensory test. ◎: Very good ○: Good ×:
Poor (2) Water pressure resistance Measured according to JIS-L1092 (Method A) (3) Air permeability Measured according to JIS-L1096 (Method A)

Examples 1 to 5 and Comparative Examples 1 to 6 Ethylene oxide adducts of isophthalic acid and bisphenol A (hereinafter referred to as BA-EO) were copolymerized in mol% shown in the yarn production condition column of Table 1, respectively. Polyethylene terephthalate and ordinary polyethylene terephthalate
Spin the same from the same nozzle at a spinning temperature of 295 ° C and a spinning speed of 2500 m / min, and heat treatment temperature and DR (drawing ratio) shown in the same column.
While stretching at, wind up at 4125m / min.
A different shrinkage mixed fiber consisting of a high shrinkage filament group A having a fineness of 37d / 24f (triangular cross section) and a low shrinkage filament group B having a fineness of 37d / 72f (triangular cross section) was obtained. The performance of the obtained yarn is shown in the column of yarn physical properties in Table 1.

[0014]

[Table 1]

The obtained yarn was used as a warp and a weft to fabricate a plain woven fabric (warp density: 165 / inch, weft density: 83 / inch). Next, the greige fabric is subjected to 110 flow using a jet dyeing machine.
Relax treatment at 30 ° C x 30 minutes, 190 ° C x 20
After presetting under the conditions of seconds, 130 ° C. × 30 with disperse dye (Dianix Bue UN-SE 2.0% owf) using the same jet dyeing machine.
Stain at 170 ° C x 3 using a tenter.
A finishing set of 0 seconds was performed. After that, Asahi Guard L
S-317 was immersed in a treatment solution of 6%, Sumitex Resin 0.3%, and Sumitex Accelerator ACX 0.3%. 170 ° C. × 40 seconds) to obtain a waterproof fabric (Examples 1 to 5) according to the method of the present invention.

For comparison with the present invention, the production was carried out in accordance with the example under the conditions shown in the column of yarn production conditions of the comparative example in Table 1.
Waterproof fabric for comparison in which the sum of the hot water shrinkage, the single yarn fineness, the Young's modulus of the mixed yarn, and the cover factor of the warp yarns of the filament group A and the filament group B was changed (Comparative Example 1)
To 6). The performances of the present invention and the comparative woven fabric were measured and evaluated, and the results were combined and shown in the performance column of Table 1. As is clear from the results of the waterproof performance, softness, and firmness of the woven fabric shown in Table 1, the processed woven fabrics of Examples 1 to 5 of the present invention show results satisfying each performance.

On the other hand, in Comparative Examples 1 to 3, the polyester filament group A had a hot water shrinkage ratio of less than 12%, the filament group A and the filament group B had a hot water shrinkage difference of 5% or less, and Comparative Example 1 is a woven fabric in which the sum of factors is set to 2200 or less and which does not satisfy the conditions of the present invention.
Were poor in water pressure and soft feeling, and Comparative Examples 2 and 3 were poor in water pressure. In Comparative Examples 4 to 6, filaments having a single yarn fineness of less than 1.0 denier in the filament group A, having a single yarn fineness of 0.6 denier or more in the filament group B, and having a Young's modulus of the mixed fiber of 90 g / d or more were used. The woven fabric used did not meet the requirements of the present invention, and was unsatisfactory because of lack of softness and firmness.

[0018]

According to the method of the present invention, it is possible to manufacture a high-density waterproof fabric which does not become coarse and hard even when densified, and simultaneously satisfies soft feeling, firmness and firmness, and waterproofness. .

Claims (1)

[Claims] 1. A different shrinkage blended yarn obtained by spinning two kinds of polyester filament groups A and B from the same nozzle at a high speed, wherein the polyester filament group A has a hot water shrinkage of 12% or more and a single yarn fineness of 1. At least 0 denier, the hot water shrinkage of the polyester filament group B is lower than the hot water shrinkage of the polyester filament group A by 5% or more.
Waterproofing characterized by weaving using a yarn having a denier of 6 denier or less and a Young's modulus of the whole mixed yarn of 90 g / d or less and finishing the finished yarn so that the sum of the cover factors of the warp yarns is 2200 or more. Fabrication method.