JP3018409B2 - Method of manufacturing flexible nylon fabric - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for producing a flexible woven fabric composed of nylon multifilaments, and the woven fabric produced by the present invention is lightweight, flexible, and air-permeable. Because it is rich in properties such as water resistance and water resistance, it is most suitable for down side lands and sportswear. As the nylon used in the present invention, various nylons such as 6-nylon, 6,6-nylon and 4,6-nylon are exemplified.

[Related Art] As a woven fabric suitable for down wear or the like, a woven fabric that is lightweight, flexible, and excellent in functions such as breathability and water resistance is desired. Such a woven fabric can be obtained by weaving fine denier multifilaments at a high density.
When using the conventional FDY which is wound at a speed of 00 m / min or less and then subjected to a stretching process, even if an attempt is made to multiply fine deniers, a thin yarn having a single denier of 1.5 d or less is spun into a raw yarn. Weaving properties are reduced due to fluff and loops generated in the above, and a sufficiently satisfactory product has not been obtained. Furthermore, there is also a method using an ultra-fine yarn obtained by thinning a composite yarn, which is referred to as a cross-beam type or a sea-island type, but it is too practical for yarn production and post-processing, which is not practical.

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

[Means for Solving the Problems] The method for producing a flexible nylon woven fabric according to the present invention employs a birefringence (Δn) of 0.03 to 0.3 spun at a winding speed of 3500 m / min or more.
45, elongation (DE) 40 to 60%, the total denier (D _1). 35 to
80 d, single yarn denier (D ₂ ) 0.4 to 1.5 d nylon multifilament is used at least for the warp, and the D ₁ is 35 to 45
when d is sum 280-340 lines / inch finish through-weft density, when the D ₁ is 45~60d, the sum of the finishing through-weft density of 250 to 300 lines / inch, the D ₁ is 60 to At 80d,
Weaving so that the sum of finishing warp and weft density is 210 to 270 yarns / inch, and There is a gist in weaving so as to satisfy.

[Operation] As described above, the yarn obtained by the conventional FDY has a low winding speed, and therefore, yarn spots, fluff, and loops are present, and it is difficult to weave yarn of denier with high density. Therefore, it is necessary to use a yarn obtained by high-speed spinning with a winding speed of 3500 m / min or more.

The birefringence (Δn) needs to be 0.03 to 0.045.
If Δn is smaller than 0.03, the weavability deteriorates, and Δn
If the ratio is larger than 0.045, the spinnability is reduced and the wound shape of the cheese is deteriorated.

The elongation should be 40-60%. If it is less than 40%, the wound shape of the cheese is poor, and if it is more than 60%, it is susceptible to physical force, the processability and weaving are poor, and the obtained product has warp and quality. descend.

The total denier (D ₁ ) must be 35-80d. In the case of 35d or less, not only the weaving property deteriorates, but also the strength of the woven fabric decreases. In the case of 80d or more,
The hand of the woven fabric becomes coarse and hard, and the soft feeling is reduced.

Single yarn denier (D ₂₎ is required to be 0.4～1.5D.
Smaller single yarn denier is more flexible and preferable, but if it is less than 0.4d, the cost of yarn production and processing is too high. Also
If it is 1.5d or more, it becomes too thick and the flexibility deteriorates.
The more preferred single yarn denier is 0.5 to 1.5 d.

The breaking strength is preferably (DT) ≧ 4.5 g / d. When the breaking strength is less than 4.5 g / d, the weaving property is reduced and the yarn breakage is liable to occur, so that the quality is reduced. Still more preferably, it is 4.5 to 7.5.

The yarn cross section may be round, triangular, polygonal, flat, etc., but the degree of irregularity in the case of irregular cross section is 1.0 to 4.0
It is preferred that The amount of titanium oxide is 0-3.0wt%
And more preferably 0 to 2.0 wt%.
It is.

The average particle diameter of TiO ₂ is preferably 0.1 to 0.4 μm.
If it exceeds 0.4 μm, the glittering property is undesirably reduced. Further, it is technically difficult to reduce the thickness to 0.1 μm or less, which is not preferable in terms of cost. Still more preferably, it is 0.3 to 0.4 μm. The degree of entanglement is preferably small as long as the yarns are bundled, and is preferably 1 to 40 yarns / m.

In the present invention, it is necessary to weave so as to satisfy the following conditions by using at least the above requirements for the warp.

When D ₁ is 35~45d, the sum of the finishing through-weft density 280
340 lines / inch, when D ₁ is 45~60d the finishing of the warp-weft density 250-300
This / inch, when D ₁ is 60~80d, the sum of the finishing through-weft density 210 to
270 pieces / inch 550 ≦ x ≦ 1320 Incidentally, if the denier of the warp-weft are different D ₁ is a thinner denier, the thicker the finishing density in terms the following formula the sum of density.

A: thick denier B: fine denier A ': finishing density of thick denier B': finishing density of fine denier The finishing density referred to here is the time of flat finishing, and may naturally exceed this density in wrinkling.

The above 550 ≦ x ≦ 1320 is a formula indicating an appropriate range of the total denier (D ₁ ) and the finish warp / weft density. However, when x is smaller than 550, the density is rough and slip is likely to occur, and functionalities such as air permeability cannot be obtained. On the other hand, when it is larger than 1320, the density becomes too high and it becomes difficult to weave, resulting in a coarse and hard fabric. A particularly preferred combination of the total denier, the number of filaments, and the sum of the finishing warp / weft density is as follows.

The weaving may be either glued weaving or non-glue weaving, but weaving in a water jet loom is preferred in terms of cost and quality. The structure is not particularly limited, but plain weave or 2/1 twill is preferred from the viewpoint of air permeability and water resistance.

Dyeing and processing after weaving may be performed as usual, but by applying calendering, functionality, hand and gloss can be remarkably improved.In addition, immersion, impregnation, water repellency by spraying, and various coatings By performing lamination, etc., the functionality can be enhanced.

[Examples] Various woven fabrics were prepared using the yarns in the categories shown in Table 2 below.

However, TiO ₂ was 0.3 wt% and the degree of yarn irregularity was 1.0.

In weaving, the same yarn is used for the warp and weft, and when the total denier is 50d, the density of the green machine is 170 × weft 105 (book /
Inch) Finish density longitude 178 x latitude 107 (lines / inch), if the total denier is 110d, density of the green machine 142 x latitude 88 (lines / inch)
Inch), water jet room 500rpm / m with 7% glue amount so that the finishing density is 148 x latitude 100 (book / inch).
Weaved with. After scouring relaxation with a jigger, dyeing, dehydration and setting, calendering (120 ° C, 25
Kg / cm ² , 20 m / min) and water repellency. The number of stops by the warp during weaving of each woven fabric, processed grade, air permeability, water pressure resistance and hand feeling were examined, and the results are shown in Table 3 together with the overall evaluation.
The air permeability is based on the JIS 1096 A method, and the water pressure is JIS 1092 A.
The quality of the processed yarn was determined by visual inspection of the quality of the warp and weft yarns, and the feeling was evaluated by the flexibility when touched.

As shown in Table 3, Examples 1 to 3 satisfying the requirements of the present invention have good quality and feeling, and are excellent in air permeability and water resistance. On the other hand, in Comparative Examples 4 to 6, since FDY having a low spinning speed was used, many fuzziness and loops were present and the feeling was poor. In Comparative Example 5, since FDY having a small single yarn denier is used without being entangled, the number of stops is large, which is not suitable for practical use. Comparative Example 7 had a single yarn denier of more than 1.7 d, and had poor feel and water resistance. Comparative Example 8 had a total denier of 90%.
The texture became coarse and hard because it exceeded d. In Comparative Example 9, since the yarn having a high elongation was used, the number of stops was large, and the processing quality was poor due to warping and the like.

Reference example Density density using yarns of categories A and D of the embodiment shown above
A plain fabric having a T130 × W150 (book / inch) and a finish density T142 × W108 was prepared, and then treated in the same manner as in the example except that calendering was performed twice on the same surface. 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. However, Reference Example 1 has a considerable finish by performing calendering twice even at a rough finish density. Maintains water resistance.

[Effects of the Invention] The present invention is configured as described above, and is capable of obtaining a lightweight and flexible woven fabric excellent in functionality such as breathability and water resistance at low cost. Further, the above-mentioned woven fabric has excellent dyeing properties and is an excellent woven fabric that can maintain a soft feeling even after various coating, laminating, and rubberizing processes.

Claims (3)

(57) [Claims] (1) In producing a nylon fabric, a birefringence (Δn) of 0.03 to 0.045, an elongation (DE) of 40 to 60%, and a total denier (D ₁ ) spun at a winding speed of 3500 m / min or more. 35 to 80 d, single yarn denier (D ₂ ) 0.4 to 1.5 d nylon multifilament is used for at least the warp, and when D ₁ is 35 to 45 d, the sum of the finishing diameter and weft density is 280
Weaved to ~ 340 lines / inch, and A method for producing a flexible nylon fabric, characterized by weaving so as to satisfy the following. 2. A birefringence (Δn) of 0.03 to 0.045, an elongation (DE) of 40 to 60%, and a total denier (D ₁ ) spun at a winding speed of 3500 m / min or more in producing a nylon fabric. 35 to 80 d, single yarn denier (D ₂ ) 0.4 to 1.5 d nylon multifilament is used for at least the warp, and when D ₁ is 45 to 60 d, the sum of the finishing diameter and weft density is 250
Weaved to ~ 300 lines / inch, and A method for producing a flexible nylon fabric, characterized by weaving so as to satisfy the following. 3. A birefringence (Δn) of 0.03 to 0.045, an elongation (DE) of 40 to 60%, and a total denier (D ₁ ) spun at a winding speed of 3500 m / min or more in producing a nylon fabric. 35-80 d, single yarn denier (D ₂ ) 0.4-1.5 d nylon multifilament is used for at least the warp, and when D ₁ is 60-80 d, the sum of the finishing diameter and weft density is 210
Weaved to be ~ 270 / inch, and A method for producing a flexible nylon fabric, characterized by weaving so as to satisfy the following.