KR19990017571A - Fabrication method of elastic woven fabrics with excellent lightness - Google Patents

Abstract

The present invention is a polyester hollow fiber of 5% to 35% of hollowness, and the length of brushed sanding at the time of sanding after fabrication of woven and knitted fabric using a yarn or a knitting yarn covering a polyurethane elastic yarn. It is a method of manufacturing stretch fabrics and knitted fabrics with excellent antistatic properties even though they are lightweight and do not have antistatic treatment by sanding as much as possible.

Description

Fabrication method of elastic woven fabrics with excellent lightness

The present invention relates to a method for producing a stretchy woven fabric and a knitted fabric which are lightweight and have excellent antistatic properties.

Most of the studies on the method of manufacturing the elastic woven and knitted fabrics are focused on the method of solving the difference in the dyeing properties resulting from the difference in physical properties between the polyurethane elastic polyester or polyester elastic yarn and the effect yarn used with the elastic yarn.

Recently, when using a mixture of polyurethane elastic yarns and polyester fibers is trying to overcome the difference by the method of processing the dyeing difference portion as introduced in Korean Patent Publication No. 96-10623.

However, when the polyester fiber and the polyurethane elastic yarn are used together, in addition to these problems, the problem of weight is increasing because of the recent activity. That is, polyester yarns generally used together with polyurethane elastic yarns are usually 1.38 to 1.43, and when combined with the specific gravity of polyurethane when making garments, the weight becomes considerably heavier than that of ordinary fabrics. In addition, since the polyester yarn is used as the material for the stretchable fabric and knitted fabric, static electricity is generated when the polyester yarn is used for clothing to be in close contact with the body. Therefore, an antistatic treatment must be performed in the processing step.

In the present invention, polyurethane elastic yarn is used as the screening, but polyester hollow fiber having a hollowness of 10 to 35% is used as an effect yarn, and the fibrillation of the hollow yarn is induced by the sending process, thereby giving a soft touch and light weight. It is an object of the present invention to provide a method for producing stretchy woven fabrics and knitted fabrics with excellent antistatic properties even if they are not prevented.

In the present invention, the yarns spun with polyethylene terephthalate-based polyester spun at 2500-3000 m / min are used as warp yarns. Weaving is done using a covering weave, or knitted using the covering yarn. If the degree of hollowness is less than 5%, the effect as a hollow fiber is lost, and the lightness and hygroscopicity are weakened. If the degree of hollowness exceeds 35%, the hollow is broken in the sending process to generate dyeing stages. The woven fabric is knitted by the following process.

In order to express a good touch, the method of sending the surface of a woven fabric is performed, without performing the weight reduction process performed by the normal polyester fabric processing method. The sanding machine used for sanding should be 5 steps, but the first roller and the last roller should be 120 ~ 250 cent papers, and the sender paper 100 ~ 150 should be used for the second, third, and fourth rollers that actually send. .

If the hollowness is broken during the sending, the antistatic performance is lowered, so the brushing length during the sending should be 0.01mm ~ 0.1mm. If the brushing length is less than 0.01 mm, the surface feels hard like the polyester's original touch. In addition, if it exceeds 0.1mm, the hollow is broken and the fiber strength is severely weakened, resulting in cutting and deterioration in antistatic properties. Refinement and reduction were performed at 90 ° C for 10 minutes and presetting at 190 ° C for 1 minute. The fabric thus prepared was treated at 130 ° C. for 30 minutes, and only the final setting without normal weight reduction treatment was performed at 180 ° C. for 1 minute to produce a stretch fabric having excellent lightness and excellent antistatic properties.

In addition, when producing a knitted fabric using the polyurethane elastic yarn and the effect yarn polyester hollow fiber, the ratio of the polyurethane elastic yarn to the hollow fiber is preferably 10 to 35% by weight.

The processing method of the knitted fabric thus manufactured was manufactured in the same manner as the fabric processing conditions except that the preset temperature was treated at 160 ° C. for 1 minute, thereby producing an elastic knitted fabric having excellent lightness and antistatic properties.

In addition, by selecting the fineness of the hollow yarn and polyurethane elastic yarn used as the effect yarn in the weaving preparation stage, it is possible to manufacture a flexible knitted fabric in a wide range of fields from external use to sportswear.

Hygroscopicity was measured by the TEXTEST agent (Hydrostatic head tester) hygroscopicity evaluation agent in order to grasp the characteristics of the fabric and knitted fabric produced by the present invention. For the evaluation of the condition, Kawasea system was used, and the static electricity was compared by using Kanebo's Electro Static Meter, and the elastic part was prepared 10mm wide and 30cm long. Calculate by

A: Marking length of initial sample, B: Length of stretched fabric

(Example 1)

Polyurethane elastic yarn, which is a screening yarn, used mono 30 denier, and 150 denier 72 filament yarn of polyethylene terephthalate polyester fiber having 10% hollowness as an effect yarn. At this time, the ratio of the polyurethane-based elastic yarn to the hollow fiber was 10% by weight. Weaving the screening with a draw ratio of 3.0, covering with an effect yarn to prepare a weft yarn. For the ramp, 75 denier and 72 filament yarns were used, and weaving was performed on an air jet loom with a warp density of 200 bones / inch and a weft density of 100 bones / inch. The machining process starts with a five-speed sender, where the first roller and the fifth roller use 120 send papers, and the second, third and fourth rollers use 100 rollers to send the brushed length to 0.05mm and reel The fabric was prepared by heat treatment at 90 ° C. for 10 minutes in a lexer, heat setting by presetting at 190 ° C. for 1 minute, dyeing at 120 ° C. for 30 minutes, and final heat setting at 180 ° C. for 1 minute.

(Example 2)

The hollow fiber was knitted by using a yarn covering 40 denier yarns of urethane-based elastic yarn with 150 denier 72 filaments of polyester hollow fiber, but the ratio of polyurethane-based elastic yarn to hollow fiber was 20% by weight. In addition, the machining process was processed in the same manner as in Example 1 except that the preset temperature is treated at 160 ° C. for 1 minute.

(Comparative Example 1)

A fabric was prepared in the same manner as in Example 1, except that hollow fiber having a hollowness of 3% was used as the effect yarn.

(Comparative Example 2)

It was prepared in the same manner as in Example 1 except that hollow fibers having a hollowness of 38% were used as the effect yarn.

(Comparative Example 3)

The fabric woven in the same manner as in Example 1 was processed in the same manner except that the brushed length is 0.005mm during the sending process.

(Comparative Example 4)

The fabric woven in the same manner as in Example 1 was processed in the same manner except that the brushed length is 0.2mm during the sending process.

(Comparative Example 5)

The same yarn as in Example 1 was used, and the effect yarn used for the weft was covered in the same conditions as in Example 14 using polyester 75 denier 72 filaments to weave the fabric and processed in the same manner as in Example 1. .

The results of Examples 1 and 2 and Comparative Examples 1 to 5 were as in Table 1.

TABLE 1

○: Excellent △: Normal ×: Poor

The present invention is to produce a flexible woven fabric, knitted fabric with excellent elasticity and antistatic performance by a simple method of sanding the polyurethane elastic yarn covered with polyester hollow fiber, and after sanding in a suitable sanding conditions during processing. Can be.

Claims (1)

In the manufacture of elastic woven fabric and knitted fabric by using polyester hollow fiber to cover polyurethane-based elastic yarn as a weft yarn, or as a weft yarn, in the production of elastic woven fabric and knitted fabric by relaxing and heat-treating woven fabrics, comfortable woven fabrics and knitted fabrics, the hollowness is 5 to 35%. A method for manufacturing stretch fabrics and knitted fabrics having excellent light weight, characterized in that sanding is performed so that the brushing length is 0.01 mm to 0.1 mm at the time of sanding.