KR100345652B1 - fabric knitted with hard-twisted yarn having high elasticity - Google Patents

Abstract

The present invention relates to a high-strength twisted yarn knitted fabric (强 撚 絲, 物), a twist of more than 1000T / M of Zn or Syeon (S 撚) and the fineness of the natural fibers each twist direction is opposite to each other ( It is obtained by knitting by feeding the single yarn twisted yarn of the filament yarn having a large spun yarn and the filament yarn having a small fineness of synthetic fibers in the same strand alternately.

The high-strength twisted yarn knitted fabric of the present invention has abundant elasticity while preventing the cost increase of the fabric and deterioration of breathability and drape due to the use of elastic yarn in the manufacture of the existing stretch fabric, and has low elasticity and elasticity in natural hemp fibers. It is a fabric for summer clothing with unique texture and physical properties that improves but gives the skin a peculiar feel.

Description

Fabric knitted with hard-twisted yarn having high elasticity

The present invention relates to a high-strength twisted yarn knitted fabric, more specifically, the single yarn twisted yarn of natural fibers and synthetic fibers are alternately knitted to have excellent drape and form stability and feel a natural hemp fiber, yet flexible dry touch It is for a stretch yarn knit fabric having excellent elasticity.

Nowadays, young people, including young people, are getting into fashion of retro clothing that is in close contact with the body and emphasizes the curve of the human body. Therefore, the fabric that conforms to the fashion trend is required to be in close contact with the human body, but excellent in elasticity, so it does not interfere with the activity and does not feel stuffy on the body.

Therefore, the domestic and foreign textile industry is more focused on the development of excellent stretch fabrics that have been continued since this trend.

Various methods have been adopted to give elasticity to fabrics, and among them, the most widely applied domestically at home and abroad are fabricated and knitted using a polyurethane-based yarn having excellent elasticity to yarns constituting the fabric. That's how. However, due to the inherent properties of the polymer, polyurethane-based yarns have a disadvantage in that the texture of the final fabric is hard and the drape is degraded. Thus, in order to solve this drawback, polyurethane-based yarns are usually used together with yarns of other materials. Doing. That is, polyurethane-based elastic fibers, commonly referred to as spandex or lycra (trade name DuPont, USA), are blended or blended with cotton fibers, other natural fibers, and synthetic fibers such as polyester to form a knitted fabric. It consists.

However, when weaving and knitting, especially when weaving and blending polyurethane-based yarns, the elasticity is remarkably different from other blended fiber yarns. Therefore, the knitting process and the post-treatment process using elastic yarns such as polyurethane are very difficult, and thus high technology In particular, the polyurethane yarn has a significant difference in dyeing to the desired color due to the complicated processing process during dyeing, because there is a big difference in the dyeability and yarn of other materials. Therefore, this difficulty in the manufacturing process was a cause of raising the unit price of the final product, and in addition to the elastic yarn itself, and also expensive, this method is considerably disadvantageous in terms of competitiveness in terms of the unit price of the fabric.

Another method is to use a twisted yarn as a yarn constituting the fabric, which is caused by the torque generated by the burn and sea smoke by the twist processing. Elasticity is given. However, this torque does not only contribute to the elasticity of the fabric but also tends to form wrinkles on the surface of the fabric. However, in this heat treatment step, the torque of the combustible work can be reduced, but there is also a waste point that reduces the elasticity of the fabric.

Therefore, the leading textile companies in Korea are continually researching in cooperation with academia to produce fabrics that are rich in elasticity, inexpensive, excellent in quality, and give a new aesthetic to appearance.

The present inventors have been engaged in the textile industry, especially in the manufacture and sales of circular knitted fabrics for a long time, and have been working diligently to develop a new-looking knitted fabric with excellent elasticity, which is well suited to the recent fashion trend. The company has developed a stretch fabric with excellent elasticity.

In other words, in the present invention by using a twisted yarn (强 撚 絲) in a unique way to give a dry feeling while giving a dry feeling like a hemp fiber, while excellent in elasticity above all, while the drape is good, the touch is flexible and there is no wrinkle It is possible to produce high-quality washable high-quality knitted fabrics simply and inexpensively.

1 is an organization chart when knitted with a 1 × 1 rib piece as an embodiment of a high-strength twisted yarn knitted fabric according to the present invention,

Figure 2 is an exemplary cross-sectional view showing clearly expanded knitting relationship of the high-strength twisted yarn knitted fabric according to the present invention.

※ Explanation of symbols for main parts of drawing

A: Speaker Knitted fabric a: Course direction

b: wale direction 1: spun yarn

2: synthetic filament yarn

3: constricted cyclic ring (編 環) 4: inside the knitting machine

5: Outside knitting machine 6: Extruded ring

According to the present invention, in the knitted fabric of the twisted yarn,

The twisted yarns are filament yarns of spun yarns and synthetic fibers of natural fibers each having a twist number of 1000 T / M or more of the right or left edge (S 撚),

The twisting yarns of the yarns and filament yarns are twisted in opposite directions and are alternately supplied and knitted at the same strand ratio.

The fineness of the spun yarn is characterized in that the fineness of the filament yarn.

The yarn used in the present invention may include cotton fibers, and may be used regenerated fibers such as woolen fibers, hemp fibers or rayon, and two or more kinds of mixed fibers thereof. The spun yarn has a twist number of 20 to 50'S. It should be single yarn speaker with 1000T / M or more.

In addition, the synthetic fibers are polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, or copolymers or blends thereof, polyester fibers, nylon 6, nylon 66, or copolymers or blends thereof Polyamide fiber, polypropylene fiber and polyacrylic fiber, among which polyethylene terephthalate may be most preferably applied, and the synthetic fiber should have a twist number of 1000T / M or more in filament state, especially 1500-1800T / M is preferable and is a single yarn twist yarn of denier 75 to 300D.

If the number of twists of the filament yarn of the spun yarn and the synthetic fiber is less than 1000T / M, the desired physical properties such as elasticity, dry touch, absorbency, etc. can not be obtained, and if it exceeds 2000T / M, the surface of the yarn due to the twisting board (撚 絲 斑), etc. This uniform fabric may not be obtained.

Knitted fabric according to the present invention can be knitted in one or two sides as necessary, and can be knitted into a variety of knitted tissues, such as a common plain tissue, Milan rib ribs, picket tissue, and also according to the arrangement of the knitting needles Knit fabrics can be obtained.

The high-strength twisted yarn knitted fabric according to the present invention is supplied in the same strand, that is, the same number of alternating filament yarn of the spun yarn and synthetic fibers. For example, if one strand of yarn is supplied, the synthetic fiber filament is repeatedly fed in one strand, or if the yarn is fed two times in a row, the synthetic fiber filaments are also fed twice in a row and are knitted. The fibers are fed and knitted alternately in equal numbers each time. In other words, when three strands of the filament yarns of the filament and the filament of the filament are supplied in a row, the filament yarns of the filament of the filament of the filament, the filament of the filament, the filament of the filament of the filament of the filament of the filament of the filament, and the filament of the filament are fed in the same number. The number of times may be adjusted appropriately depending on the texture, thickness, pattern, etc. of the final knitted fabric.

In this way, according to the present invention, the left and right instructors are alternately supplied in a one-to-one order, and the left and right edges are combined and the knitting is not disturbed. The voids in the tissues allow for good ventilation, sweat absorption, fast drying, and a flexible, dry touch. In addition, because it is a twisted yarn knit fabric, wear resistance and laundering resistance is excellent, so no fluff occurs, so it can always be worn for a long time like a new clothes, so it is durable, and since it does not prevent lining, it can be worn at all times.

In addition, the high-strength twisted yarn knitted fabric according to the present invention is reduced to about one third of the normal knitted fabric, so that it does not stick to the body to provide a cool feeling, it is excellent in the spring and summer, especially in summer wear.

When described in detail with reference to the accompanying drawings of the lecture yarn knitted fabric of the present invention as follows.

Figure 1 shows that when the twisted yarn knitted fabric (A) according to the present invention is knitted into a 1 × 1 rib piece, the yarn 1 and the synthetic filament yarn (2) is supplied and knitted at a ratio of 1: 1, Figure In Figure 2 is a cross-sectional view showing a clearly expanded knitting relationship of the finished fabric when producing a high-stretched twisted yarn knitted fabric according to the present invention using a single circular knitting machine.

As shown in Fig. 1, the yarns 1 and synthetic filament yarns 2 are alternately supplied in the same strand. And since the thickness of the spun yarn (1) supplied is thicker than the thickness of the synthetic filament yarn (2), the knitting of the spun yarn (1) is slightly squeezed toward the inside of the knitting machine (4) to form a loop.

By knitting in this way, the back surface of the knitted fabric is obtained with a dough formed mainly of the yarn (1).

The knitted fabric is then finished after the refining process, dehydration process, dyeing process, dehydration and washing process and heat setting process.

Therefore, the manufactured knitted fabric is shrinked and shrunk as the synthetic filament yarn 2 knitted into a structure as shown in FIG. 2 by the high temperature heat treatment process in the high temperature and heat setting process of the dyeing process, and the spun yarn 1 More protruded.

That is, as shown in FIG. 2, the knitted dough is slightly shrunk by the synthetic filament yarn 2 during the high temperature post-treatment, so that the loop collapses to form a shrunk circular ring 3, whereas the spun yarn 1 The inner side of the knitting machine 4 is knitted to protrude more than the synthetic filament yarn 2, and the contraction of the synthetic filament yarn 2 forms a protruding knitted ring 6 which is more prominent to the outside.

As a result, the high-strength twisted yarn knitted fabric (A) according to the present invention has a rough texture like a hemp fabric, but gives elasticity and drape not found in natural hemp fabrics and exhibits flexible dry touch.

Hereinafter, in order to more easily understand the features of the present invention will be described below with reference to a specific embodiment, this embodiment is for illustration only, the present invention is not limited to this and the present invention belongs to the field Those skilled in the art will readily appreciate that modifications and variations are possible within the scope of the invention and the scope of the appended claims.

(Example)

The 80 feeder of the four-stage single circular knitting machine (30 feeders) of single yarn lecture 1350T / M 30'S cotton yarn and single yarn lecture 1500T / M 150D polyethylene terephthalate was continuously supplied alternately in a ratio of 1: 1 to form a picket structure.

Knitted dough was removed through the usual refining process, and then dehydrated, and then dyed cotton yarn first at 80 ° C. using a reactive dye. Then, the dye was again dyed at 125 ° C. using a disperse dye to dye polyethylene terephthalate yarn.

After dyeing, it was sufficiently dehydrated and washed with water and then heat-set at 130 ° C.

In this post-treatment, the dough was protruding slightly irregularly, unlike when it was first knitted. This is because the polyethylene terephthalate yarn of the dough is slightly contracted by the second heat treatment, so only the cotton yarn is protruded, and thus small protrusions are regularly generated on the surface.

Therefore, the dough passed through the final post-treatment process was a little rough, and it felt like hemp fiber, but it was also soft and drape, and the touch was dry.

In addition, in order to test the physical properties of the formed dough, the material was tested by the Korea Textile Testing Institute, and the results are shown in Table 1.

Table 1

Physical property (unit) Measure Exam conditions Wash shrinkage rate (%) + 4.0 + 4.0 KS K 0465, 40 ± 3 ℃, net dry Peeling property (grade) 5 KS K 0501 Lecture degree (cm) 2.322.28 KS K 0539 Waco Coat (%) 8265 KS K 0550 Absorbency (mm) Whale Coat 1726 KS K 0815, B Type Air permeability (cm ³ / cm ² / s) 132.8 KS K 0570 Friction Belt Voltage (Volt) 10 KS K 0555, Method B (20 ± 2 ° C, 65 ± 2% RH, 400rpm, cotton cloth) Wear strength (cycle) More than 20000 KS K 0604, Matindale test (applied load: 9 kPa, wear direction: multi-directional, tip: when the test piece breaks) Thermal insulation (%) 12.5 KS K 0466, KS K 0560 Constant Temperature Method

As can be seen from the results of Table 1, the generated letter has a high air permeability and excellent water absorption, so it can be confirmed that it is an optimal fabric for summer clothing. In addition, it was also found that the wear strength was high and the fusiformity was low, so that it was not wrinkled, and there was no deformation such as shrinkage caused by washing, and thus washing was possible.

According to the high-stretched twisted yarn knitted fabric according to the present invention made in the above manner, it is excellent in elasticity to the same extent as the case of using a polyurethane-based elastic yarn, the use of a twisted yarn of yarn blended with synthetic fibers or spun yarn, in particular cotton fibers It has the same absorbency as the case, and it has excellent drape property and gives a rough feeling like hemp fiber, but it is not wrinkled and can be washed with water, and it can be manufactured at the production price of half the hemp fabric while supplementing the weak point of hemp fiber. Economical, flexible dry touch gives a luxurious feeling.

In addition, most knitted fabrics have a phenomenon in which the garment is returned to one direction by knitting using twisted yarns in one direction of the left side or the right side. In the case of the high-stretched twisted yarn knitted fabric according to the present invention, the left and the right side yarns are used interchangeably. Because of the cross knitting, there is no distortion, so the shape stability is good and the sweat is absorbed, and the clothing does not stick to the body, thus providing a comfortable and refreshing fit.

In addition, in the case of fabrics or garments knitted with cotton fibers, silicone-based chemicals are used to increase drape. In the case of the high-strength twisted yarn knitted fabric according to the present invention, cotton fibers are twisted yarns. This is good. Therefore, there is little harm to the human body due to the overuse of chemicals, and the environmental pollution caused by the discharge of chemicals can be reduced, which is very environmentally friendly.

Claims (3)

In the knitted fabric excellent in stretch yarn, The twisted yarns are filament yarns of spun yarns of natural fibers and synthetic fibers each having a twist number of 1000 T / M or more of the right side (Z ') or the left side (S'), The twisting yarns of the yarns and filament yarns are twisted in opposite directions and are alternately supplied and knitted at the same strand ratio. And the fineness of the spun yarn is greater than the fineness of the filament yarn. The method of claim 1, wherein the yarn is cotton fiber, wool fiber, hemp fiber or rayon, or two or more kinds of blended fibers thereof, characterized in that the yarn yarn yarn number of 20 to 50'S, twisted yarn is more than 1000T / M single yarn twisted yarn High stretch speaker knitting fabric. The method of claim 1, wherein the synthetic fibers are polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, copolymers or blends of polyester fibers, nylon 6, nylon 66, or air thereof It is a polyamide fiber, a polypropylene fiber and a polyacrylic fiber of a blend or blend, the synthetic filament yarn has a twist number of 1000T / M or more, characterized in that the single yarn twist yarn of 75 to 300D thickness.