JPH0457936A - Production of highly transparent nylon woven fabric - Google Patents

Abstract

PURPOSE:To obtain the lightweight and flexible title woven fabric having excellent transparency and gloss by using a specific nylon multifilament obtained by high-speed spinning as warp and weft and weaving the multifilament under specific conditions. CONSTITUTION:A nylon multifilament obtained by spinning at a winding rate of >=3500 m/min and having <=0.1wt.% TiO2 content, 0.1-0.4mu average grain size, >=4.5g/d breaking strength (DT), 40-60% elongation (DE) and 2.0-6.0 flatness, and satisfying the equation 0.4<=D1<1/2>/D2 <=3.0 in total denier (D1) and single yarn denier (D,) is used as warp and/or weft and woven so as to satisfy the equations 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 highly transparent fabric made of nylon multifilament, and the fabric produced by the present invention has transparency and luster. Moreover, since it is lightweight and flexible, it can provide excellent rejuvenation properties even to sportswear, casual wear, etc. 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] In order to obtain a woven fabric with high transparency and flexibility, it is desirable to use multifilaments with a low TiO2 content and a fine denier to weave at a coarse density that does not cause crowding. However, when using conventional FDY, which is first subjected to a spinning process at a spinning speed of 1000 m/min or less, and then subjected to a drawing process, multifilament is difficult to weave because there is a lot of unevenness per thread, which increases the number of spinning steps, and warp thread breakage is likely to occur. Therefore, a high-quality fabric cannot be obtained, and although monofilament is easy to weave, it does not provide flexibility.

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide at a low cost a high-quality fabric that is highly transparent and flexible, which could not be obtained conventionally. That is.

[Means for Solving Problem 11] The method for manufacturing a highly transparent nylon fabric of the present invention
T i O* content 0 spun at a winding speed of /min or more
．． 1 wt% or less, Tie, average particle size 0.1-0.4μ
, breaking strength (DT)≧4.58/d, elongation (DE) 4
Nylon mulch that satisfies 0 to 60%, flatness 2.0 to 6.0, total denier (Dl) and single yarn denier (Dl) of 0.4≦'T;""T-/D 2≦3.0 The gist is to use filaments as warps and/or wefts and to weave so as to satisfy the following conditions: 400≦D1 and the sum of finished warp and weft density≦1240.

[Function] Conventional FDY has yarn unevenness, loops, and fluff, and cannot produce high-quality fabrics. Therefore, it is necessary to spin at a winding speed of 3,500 cm/min or higher. Further, when carrying out the production method of the present invention, yarns made by a direct spinning/drawing method in which the spinning step and the drawing step are continuous steps are preferable because they cause less migration.

The content of Tie2 needs to be 0.1% by weight or less, preferably 0.0 to 0.05% by weight. T
When iO2 exceeds 0.1% by weight, sufficient gloss and transparency cannot be obtained, and the breaking strength of the yarn also tends to decrease, which is not preferable.

The average particle size of the Tie must be 0.1 to 0.4μ. If it exceeds 0.4μ, it is undesirable because the transparency and color clarity will decrease, and it is technically difficult to make it less than 0.1μ, which is undesirable in terms of cost. Still more preferably 0.3 to 0. .4μ.

It is necessary that the breaking strength (DT) is 4 g/d.

When the breaking strength is less than 4 g/d, weavability is reduced and thread breakage is more likely to occur, resulting in poor transparency. More preferably, it is 4.5 to 7.5.

It is necessary that the flatness is between 2.0 and 6.0, and it is particularly preferable that the flatness is between 3.0 and 5.0 because it provides even more transparency and a high-quality gloss, whereas when it is less than 2.0, it is preferable. Transparency deteriorates due to uniform diffused reflection, and conversely, when it exceeds 6.0, although transparency increases, glare occurs and quality deteriorates. Incidentally, the flatness is expressed as major axis length/minor axis length. Further, the cross-sectional shape is not particularly limited as long as it is flat, and various shapes can be used.

The elongation needs to be 40-60%. If it is less than 40%, the rolled shape will be poor, and if the elongation is high to some extent,
It is effective for making fine denier because it can maintain flexibility against physical deformation and has resistance against instantaneous external forces. However, if it exceeds 60%, process passability during weaving becomes poor and puckering tends to occur in the product. A more preferable elongation is 45 to 55%. In order to obtain the above elongation, the spinning speed should be 3500 m/min or more.

For example, fl-1/D2 is a formula that shows the appropriate range of total denier (Dl) and single yarn denier (Dl).If they are the same, the larger this value becomes, the stronger the multifilament character becomes, and the smaller the value, the stronger the multifilament character becomes. Its character as a monofilament becomes stronger. J1 shoulder-/D2 is 0.4~
It needs to be 3.0, preferably 0.5 to 2.6. As this value becomes smaller, the transparency improves, but 0.
If it is less than 4, the texture will be rough and hard, and if it exceeds 3.0, the texture will be soft, but sufficient transparency will not be obtained.

Yarn that meets the above requirements is woven so that the following conditions are met.

400 ≦

is the denier of the thinner side, and the finished density of the thicker side is converted using the following formula to find the sum of the densities.

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 400≦X≦1240 is the total denier (DI
) is a formula that indicates the appropriate range of finishing warp and latitude density.If it is within this range, practical performance can be obtained in terms of transparency and strength, but it is more preferable to use 430 to 1060.
It is. When X is less than 400, the transparency is high, but because the total denier is small or the density is coarse, it is difficult to weave, the product tends to get loose, and the strength of the fabric decreases. If it exceeds 1240, practical performance such as strength can be obtained, but sufficient transparency cannot be obtained.

Particularly preferable combinations of the total denier DI, the number of filaments, and the sum of finished warp and weft density are as follows.

Table 1 [Example] Experimental Example 1 Using the yarn shown in Table 2, the finished density was 12 in plain weave.
The fabric was woven at a density of 0 x weft 100 wood/inch, and after scouring with a jigger, it was dried and finished and set.

Table 2 Oblateness is 4.0 and T i O2 content is 0%.
.

Using yarn with a brand of 50 dlOf, in the state of raw acid after weaving,
The transparency, gloss, texture, and quality of each fabric were visually evaluated. The results are shown in Table 3.

3rd surface There was a lot of twisting and migration of the warp yarns, so the warp direction had brush marks and the quality was poor.

Experimental Example 2 DDN with a spinning speed of 3500 s/@in, an elongation of 50% (however, Comparative Example 5.6 was 70%), and a degree of entanglement of 20 pieces/layer, '! A plain woven fabric was created using the types of yarns shown in Table J6. The finished warp and weft density at that time were set as follows based on the total denier (Dl) of the yarn used.

Table 4 Comparative examples using conventional yarns have a slightly poor transparency as migration progresses and light is reflected diffusely.Also, after scouring the resulting fabric with a jigger, drying and finishing setting, the transparency of the fabric in the raw state is improved. The feel, gloss, and texture were visually evaluated. Fifth
The evaluation criteria are shown in the table, and the results are shown in Table 6.

As shown in Table 6, Examples 1 to 5 of the present invention had no disadvantages in terms of transparency, gloss, and texture, and excellent and practical fabrics were obtained. On the other hand, Comparative Example 1 has a large single yarn denier and i / D z of less than 0.4, so the texture is rough and hard, and Comparative Example 2 has a large total denier and finishing density, so it is not transparent. The texture was also rough and hard. Comparative Example 3 had a flatness of 2 or less, causing uniform diffuse reflection and no transparency, and Comparative Example 4 had a flatness of 6 or more, and although it had a transparent feel, it produced a strong glare rather than gloss. . In Comparative Example 5, the content of titanium oxide was high, and transparency and gloss were not obtained, and the breaking strength was low, resulting in poor weavability and poor fabric quality. In Comparative Example 6, the average particle size of the Tie was large, so that sufficient transparency and gloss could not be obtained.As in Comparative Example 6, a practical textile could not be obtained due to some disadvantages as in Comparative Example 0 and above.

[Effects of the Invention] The present invention is configured as described above, and it has become possible to provide a fabric that is excellent in transparency, has gloss, and is lightweight and flexible.

Claims (1)

[Claims] In producing a nylon fabric, TiO_
2 content 0.1wt% or less, TiO_2 average particle size 0.1-0.4μ, breaking strength (DT) ≧4g/d, elongation (DE) 40-60%, flatness 2.0-6.0 , Total denier (D_1) and single thread denier (D_2)
Nylon multifilament that satisfies 0.4≦√(D_1)/D_2≦3.0 is used for the warp and/or weft, so that 400≦D_1√(sum of finished warp and weft density)≦1240. A method for producing a highly transparent nylon fabric, characterized by weaving it.