JPH0457934A - Production of flexible nylon woven fabric - Google Patents

Abstract

PURPOSE:To inexpensively obtain the lightweight and flexible title woven fabric being excellent in functional characteristics such as air diffusibility and water resistance and having good dyeing properties by weaving a nylon multifilament having specific properties by high-speed spinning under specific conditions. CONSTITUTION:A nylon multifilament obtained by spinning at winding rate of >=3500m/min and having 0.03-0.04 double refractive index ( n), 40-60% elongation, 25-90d total denier (D1) and 0.4-1.7d single yarn denier (D2) is used as warp and/weft and woven so as to satisfy the formula to provide the objective woven fabric.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a method for producing a flexible woven fabric made of nylon multifilament, and the woven fabric produced by the present invention is lightweight, flexible, and breathable. Because it is rich in functionality such as durability and water resistance, it is ideal for down linings and sportswear. Examples of the nylon used in the present invention include various nylons such as 6-nylon, 6,6-nylon, and 4.6-nylon.

[Prior Art] Fabrics used for down wear and the like are desired to be lightweight, flexible, and have excellent functionality such as breathability and water resistance. Such fabrics are obtained by densely weaving fine denier multifilaments, but at a spinning speed of 10
When using conventional FDY, which is wound at a speed of less than 0.00cm/min and then subjected to a drawing process, even if you try to make a thin yarn with a fine denier into mulch, a fine yarn with a single yarn denier of 1.5d or less will not be able to be used as a raw yarn. Weavability deteriorates due to fuzz and loops generated during the spinning process, making it impossible to obtain a fully satisfactory product. Furthermore, there is a method of using ultra-fine yarn made by thinning a composite yarn called a needle type or a seabird type, but it is not practical because the spinning and post-processing costs are too high.

[Problems to be Solved by the Invention] The present invention has been made in view of the above circumstances, and aims to provide a fabric that is flexible, lightweight, and has excellent functionality such as breathability and water resistance. It is.

[Means for Solving the Problems] The method for manufacturing a flexible nylon fabric of the present invention is as follows: 350011
Birefringence (Δn) spun at a winding speed of 1/min or more
0.03-0.045, elongation (DE) 40-60%
, using nylon multifilament with a total denier (D) of 25 to 90 d and a single yarn denier (D2) of 0.4 to 1.7 d for the warp and/or weft, 550≦D, x
The gist is to weave so that the sum of finished edge and weft density≦1320 is satisfied.

[Function] As mentioned above, the winding speed of the yarn obtained by conventional FDY is slow, so yarn unevenness, fuzz, and loops are present, making it difficult to weave high-denier yarn with high density. Therefore, it is necessary to use a system obtained by high-speed spinning at a winding speed of 3500 m/min or higher.

The birefringence (Δn) needs to be 0.03 to 0.045. If Δn is less than 0.03, the weavability will be poor, and if Δn is greater than 0.045, the spinning property will be poor and the rolled shape of the cheese will be poor.

The elongation needs to be 40-60%. If it is less than 40%, the rolled shape of the cheese will be poor, and if it exceeds 60%, it will be easily subjected to physical force, and the process passability and weavability will be poor, and the obtained product will also have warp lines and poor quality. decreases.

The total denier (Dl) needs to be 25 to 90 d. When it is less than 25 d, not only the weavability deteriorates but also the strength of the fabric decreases. Moreover, if it is 90 d or more, the texture of the fabric becomes rough and hard, and the soft feeling decreases.

The single yarn denier (D2) needs to be 0.4 to 1.7 d. A smaller single yarn denier is preferable because it is more flexible, but if it is less than 0.4 d, spinning and processing become too expensive. Moreover, if it is 1.7 d or more, it becomes too thick and the flexibility deteriorates. More preferable single yarn denier 0.5-1
, 5d.

It is preferable that the breaking strength is (DT)≧4.5 g/d. When the breaking strength is less than 4.5 g/d, the weavability is reduced and thread breakage is more likely to occur, resulting in a decrease in quality. More preferably, it is 4.5 to 7.5.

The yarn cross section may be round, triangular, polygonal, flat, etc., but if it has an irregular cross section, the degree of irregularity is 1.0 to 4.
．． The amount of titanium oxide is preferably 0 to 3.
It is preferably Owt%, more preferably 0 to
It is 2.0wt%.

The average particle size of Tie is preferably 0.1 to 0.4 μ. If it exceeds 0.4μ, the glitter property will decrease, which is not preferable. Further, it is technically difficult to make the thickness smaller than 0.1 μm, and it is not preferable in terms of cost.

More preferably, it is 0.3 to 064μ. Further, the degree of entanglement is preferably as small as possible as long as the threads are gathered together, and is preferably 1 to 40 pieces/■.

In the present invention, it is necessary to weave a yarn that satisfies the above requirements so as to satisfy the following conditions.

550≦X≦1320, where x=D, the difference between finished edge and weft densities, and if the warp and weft denier is different, Dl is the thinner denier, and the thicker finished density is converted using the following formula to calculate the sum of the densities. seek.

A...Thick denier B...Fine denier A'...
Finishing density B' for thick denier...Finishing density for fine denier Also, the finishing density here refers to the time of flat finishing, and of course, this density may be exceeded in the case of wrinkle processing, etc.

The above 550≦X≦1320 is total denier (Dl)
This is a formula that indicates the appropriate range of finished edge and weft density.Within this range, a fabric that is lightweight, flexible, and rich in functionality such as breathability and water resistance can be obtained, but if X is 550 When it is smaller than , the density is rough and slips easily, and functionality such as breathability cannot be obtained.

Moreover, when it is larger than 1320, the density becomes too dense and it becomes difficult to weave, resulting in a rough and hard fabric. Particularly preferable combinations of total denier, number of filaments, and sum of finished edge and weft density are as follows.

The weaving may be either glued weaving or non-glued weaving, but it is preferable to weave in a water jet loom from the viewpoint of cost and quality.The zero weave is not particularly limited, but plain weave or 2/1 twill is preferred from the viewpoint of breathability and water resistance. etc. are preferred.

Dyeing and processing after weaving can be carried out as usual, but functionality, texture, and gloss can be significantly improved by calendering.In addition to water-repellent finishing by dipping, impregnating, and spraying, various coatings, Functionality can be enhanced by applying lamination, etc.

[Example] Various woven fabrics were created using yarns classified as shown in Table 2 below.

1' direct spun drawn yarn However, Tie2 is 0.3 wt% and yarn irregularity is 1.0.
Met.

When weaving, use the same yarn for warp and weft, and if the total denier is 50d, the gray fabric density is warp 170 x weft 105.
(Wood/inch) Finishing density warp 178 x latitude 10f (pieces/inch), if the total denier is 110d, gray material density warp 142 x weft 88 (pieces/inch), finishing density longitude 148 x latitude 100 (pieces/inch) ) Weaving was carried out using a water jet loom at 500 rp/■ with a sizing amount of 7%. Afterwards, it is refined and relaxed with a jigger, dyed, dehydrated, set, and then calendered (120℃, 25Kg/
cm", 20 cm/min) and water-repellent finish.The number of stops by the warp during weaving of each fabric, processing quality, air permeability, water pressure resistance, and texture were investigated and shown in Table 3 along with the overall evaluation. The air permeability was measured according to the JIS 1096 A method, the water pressure resistance was measured according to the JIS 1092^ method, the processing quality was determined visually by the quality of the warp and weft, and the texture was evaluated by the softness when touched. did.

Example 1 satisfying the requirements of the present invention as shown in Table 3
-3 has good quality and feel, and is also excellent in breathability and water resistance. On the other hand, Comparative Examples 4 to 6 use FDY with a slow spinning speed, so there are many loops and the texture is poor, and Comparative Example 5 uses FDY with a thin single yarn denier without entangling. Therefore, it is not suitable for practical use because it has to stop many times. In Comparative Example 7, the single yarn denier exceeded 1.7 d, resulting in poor hand and water resistance, and in Comparative Example 8, the total denier exceeded 90 d, resulting in a rough and hard hand. In Comparative Example 9, yarn with high elongation was used, so the machine was stopped many times, and the quality of processing was poor due to warp lines and the like.

Reference Example Using the threads of classifications A and D of the example shown above, the gray density T
130XW150 (pcs/inch), finishing density T142
A xW108 plain woven fabric was prepared and treated in the same manner as in the example except that it was calendered twice on the same side. The results are shown in Table 4.

The yarns used in Reference Examples 1 to 3 correspond to Example 1, Comparative Example 7, and Comparative Example 4, respectively, but even though Reference Example 1 has a rough finish density, it is considerably improved by calendering twice. Maintains water resistance.

[Effects of the Invention] The present invention is configured as described above, and it has become possible to obtain at a low cost a fabric that is lightweight, flexible, and has excellent functionality such as breathability and water resistance. Furthermore, the above-mentioned fabric has good dyeability and is an excellent fabric that can maintain its soft texture even after various treatments such as coating, laminating, and rubberizing.

Claims (1)

[Claims] In producing a nylon fabric, birefringence (
Δn) 0.03 to 0.045, elongation (DE) 40 to 60%, total denier (D_1) 25 to 90 d, and single yarn denier (D_2) 0.4 to 1.7 d. Or, a method for producing a flexible nylon fabric, characterized in that it is used as a weft and weaved so that 550≦D_1√(sum of finished warp and weft density)≦1320 is satisfied.