KR100969888B1 - Warp knitted fabric of synthetic multifilament - Google Patents

Abstract

The present invention relates to a synthetic multifilament warp knitted fabric, wherein a single strand of synthetic multifilament is air-interlaced on the surface portion thereof, and a fine-grained synthetic multifilament yarn having an instability of 0.1 to 1.0% is arranged. The back side portion is characterized in that the synthetic multifilament is arranged.

In the present invention, the loop is formed on the surface uniformly, and the fine-grained fine-grained fine multifilament yarn is arranged to express a touch like a warp knitted fabric made of cotton spun yarn, and excellent lightness and refreshing feeling.

Warp knitting paper, processed yarn, air entanglement, fineness, warp, foil, multifilament, hand, cotton spinning yarn.

Description

Warp knitted fabric of synthetic multifilament

1 is a schematic view of an air entanglement process for producing a fine-grained synthetic multifilament yarns constituting the present invention.

Figure 2 is an electron micrograph of a conventional air duct processing (air-texuring processing).

3 is an electron micrograph of the fine-grained synthetic multifilament yarn of the present invention.

* Explanation of symbols on the main parts of the drawings

1: synthetic multifilament (yarn) 2: first feed roller

3: air entrained nozzle 4: water supply device

5: 2nd supply roller 6: hollow heater

7: winding roller

The present invention relates to a synthetic multifilament warp knitted fabric, and more particularly, the present invention relates to a fine-spun synthetic multifilament yarn having excellent loop stability and uniform loops and having a tactile feel such as cotton spun yarn, which is manufactured from cotton spun yarn. The present invention relates to a synthetic multifilament warp knit which exhibits the same feel as the warp knit and is excellent in light weight and refreshing feeling.

Many efforts have been made to give synthetic fibers the same effect as natural fibers. Among them, a method for reducing the smooth surface characteristics of synthetic filaments is a method of compositing biaxial intertwined yarns having different flammability and shrinkage characteristics, and an air texuring method for producing a cotton-like effect. Representative. A general filament is used in the warp direction of the fabric, and a fabric made of the weft yarn of the air-texturing yarn is usually referred to as Taslan (trade name). Taslan fabric has a surface with a loop formed on the surface like cotton, so it is mainly used in sportswear such as ski suits, jackets, and casual outerwear due to the thermal insulation effect by the loop, increase in friction coefficient, and similar texture to cotton. It is a fabric.

In general, air texturing processing supplies two yarns to the nozzle at different speeds by feeding the yarn with two different overfeed rates. Looping in and judging is the principle by which such yarns can be entangled to give stability to the yarn. Basically, since the air texturing processing method supplies two yarns and is supplied in an overfeed state, the final air texturing processing yarn is usually 20 denier or more higher than the denier sum of the two yarns.

Recently, the preference trend of the fabric is increasing interest in the light weight and soft touch of the fabric by the finer finer as the other types of fabric. When the fabric is woven using the yarn of fineness, the thickness of the fabric becomes thinner and the paper becomes thin, and the weight of the fabric can be satisfied, which can satisfy the lightweight required in recent sportswear. In addition, in the case of foil rather than Fuji, it feels much softer and feels cooler, so for the fabrication of the fabric, we prefer to use yarn of fine fineness in the direction of inclined filament and use air fine-textured yarn of low fineness in the weft direction at the same time. Should be used. In addition, if the use of air fine-textured yarn of low fineness to the inclination can exhibit the thermal insulation effect by the loop, the increase of the coefficient of friction, and the texture similar to that of the conventional Taslan fabric.

Conventionally, the technique of using the fine filament in the inclined direction has been progressed a lot, but the conventional air texturing processing yarn had a problem of poor weaving when using the inclined furnace because of the loop formed in the surface of the processing yarn as shown in FIG. .

Figure 2 is an electron micrograph of a conventional air texturing process.

In general, when manufacturing a fine-grained fine air-textured yarn of 100 denier or less, two strands of 40 or less denier should be air-processed. However, when processing by this method, since the production per unit time is basically small, the manufacturing cost is high. In addition, there is a problem of rising manufacturing costs from the yarn introduction stage, since the finer yarn is used. When processing two fine yarns of fine-grained yarns, the stability of the processed yarn may be high due to the structure of the screening / weaving yarn. In addition, there is a problem that can not increase the processing speed due to frequent mechanical cutting due to low strength.

On the other hand, synthetic multifilament warp knitted fabric prepared by using the conventional air-texturing processing yarn as a part or all of the warp knitted yarn, as shown in Figure 2 is difficult to be hardened, and does not express the same touch as the warp knitted fabric made of cotton spun yarn, There was a problem that the refreshing feeling was not expressed.

In order to solve the above problems, the present invention is excellent in loop stability and uniform in loop, and has the same feel as cotton spun yarn, and only one strand of fine fine yarn (filament) is air processed to have fine fineness having fine fineness. The filament yarn is arranged in the surface portion of the warp knitted paper to express the same feel as the warp knitted fabric made of cotton spun yarn, and to provide a synthetic multifilament warp knitted paper excellent in lightness and refreshing feeling.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, the synthetic multifilament warp knitted fabric according to the present invention is a single strand of synthetic multifilament on the surface portion is air-cross-processed alone, fine-grained synthetic multifilament yarn having an instability of 0.1 ~ 1.0% is arranged, The back side portion is characterized in that the synthetic multifilament is arranged.

A part of the fine-grain synthetic multifilament yarn and the synthetic multifilament are connected to each other in a loop shape so that the front portion and the back portion of the warp knitted fabric are composed of one layer.

The fine-grained synthetic multifilament yarns arranged on the surface portion of the warp knitted fabric are single-stranded fine-grained multifilament fibers, and have an instability of 0.1 to 1.0%.

If the instability is less than 0.1%, the stability is excellent, but there is almost no loop generation, and the improvement effect such as touch is low. If the instability exceeds 1.0%, the loop is formed unstable and the weaving efficiency is lowered when the ramp is used.

In addition, the fine-grained synthetic multifilament yarn has a total fineness of 20 ~ 75 denier, the total fineness increase rate of the processed yarn of the air-weaved processed yarn compared to the total fineness of the synthetic multifilament before the air entanglement is 1 ~ 8%, single yarn fineness is 0.5 ~ 1.5 denier level, and unevenness (U%) is 1.5 ~ 3.5%.

In addition, the three fineness jeonggyeongseong's synthesis processing multifilament is preferably not more than 5.0 times / 10 ⁷ m. The jeonggyeongseong represents the number of scene ⁷ length 10 m cut-off sugar.

The synthetic multifilament used for the production of the synthetic multifilament or the fine-grained synthetic multifilament yarn of the warp knitted fabric is polyamide multifilament or polyester multifilament.

3 is an electron micrograph of the fine-grained synthetic multifilament yarn of the present invention.

In the present invention, the instability, unevenness (U%) and knitting efficiency of the fine-grained synthetic multifilament yarn were evaluated by the following method.

Instability

Semdodo multi-filament yarn (hereinafter abbreviated as "work") is wound 10 times in yarn krill to make a skein, and after measuring the length after 1 minute with the weight of 0.01 cN / dtex, the length is defined as L1, 0.5 L1 is defined as the length of the weight of cN / dtex weighed for 1 minute and then measured by the weight of 0.01 cN / dtex of initial tension.

Next, the measured instability is calculated by substituting the measured L1 and L2 into the following equation.

The lower the instability, the better the stability.

· Inhomogeneity (U%)

Using a uniformity tester 80 (type C) manufactured by Keisokki, Japan, the measurement was carried out at a speed of 25m / min in normal mode.

Knitting efficiency (%)

Using the fine-grained multifilament yarn as a surface yarn, when the 100 yards are seen as the end when weaving, the percentage ratio of the end to the end without cutting is determined as the efficiency of the knitting.

· Kyung Sung Jeong (dog)

The finished yarn shows a three fineness multifilament the Karl Mayer (Karl Mayer) scene ⁷ length 10 m cut-off number of times per time to scenes in the warper sasok of 500m / min to jeonggyeongseong.

The fine-grained synthetic multifilament yarn used in the present invention supplies one strand of synthetic multifilament into the air entanglement nozzle 3 through the first feed roller 2 as shown in FIG. 1 at an overfeed rate of 1 to 8%. At the same time, by supplying air having an air pressure of 6 ~ 15kgf / ㎠ to the air entanglement nozzle (3) and spraying it into the synthetic multifilament passing through the air entanglement processing nozzle (3) to the synthetic multifilament air Next, it is manufactured by the method of heat treatment subsequently.

1 is a schematic diagram of an airtexturing process for producing a fine-grained synthetic multifilament yarn which constitutes the present invention.

Specifically, one fine strand of fine-grained multifilament (yarn) is supplied through the first feed roller 2 into the air entanglement nozzle 3 at an overfeed rate of 1 to 8%.

The overfeed rate is adjusted by changing the rotational linear speeds of the first supply roller 2 and the second supply roller 5.

If the overfeed rate is out of the above range, the loop becomes uneven or the loop stability deteriorates.

The rotational linear speed of the first supply roller 2 is preferably 200 to 800 m / min.

Before supplying the fine-grained synthetic multifilament 1 into the air-entry processing nozzle 3 as described above, water is supplied to the fine-grained synthetic multifilament 1 by the water supply device 4, more preferably, deionized. It is a good idea to supply water.

The fine-grained synthetic multifilament (1) is 20 to 70 denier in total fineness, 0.5 to 1.5 denier in the single yarn fineness is preferable to use as a warp for cloth fabrics after air-interlacing processing.

The fine-grained synthetic multifilament 1 is polyamide multifilament or polyester multifilament.

Next, as described above, one strand of the fine-grained synthetic multifilament (1) was supplied into the air entanglement processing nozzle (3), and at the same time, air having an air pressure of 6 to 15 kgf / cm2 was supplied into the air entanglement processing nozzle (3). Thereafter, the fine fine particles, which pass through the air entanglement processing nozzle 3, are sprayed into the synthetic multifilament 1, and the air entanglement process is performed.

When the air pressure is out of the above range, there is a problem such as an uneven generation of loops, an uneven loop, frequent trimming during air entanglement, or insufficient air entanglement.

Next, as described above, the air entangled yarn 1 is heat-treated in a heat treatment apparatus such as a hollow heater 6 to produce a fine-grained synthetic multifilament yarn according to the present invention.

The heat treatment is preferably carried out at a temperature of 160 ~ 200 ℃, below 160 ℃ the stability of the loop is lowered, if exceeding in 200 ℃ may cause problems such as the strength of the processed yarn is reduced and the color changes (yellowing) have.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

However, the present invention is not limited by the following examples.

Example  One

After feeding the ionized water to the nylon 6 multifilament 1 strand of 50 denier / 48 filament in the water supply device 4 as shown in Figure 1, the nylon 6 filament 1 strand through the first feed roller (2) The nylon 6 multifilament is air entangled (air entanglement) by supplying air into the air entanglement nozzle (3) at an overfeed rate of% and simultaneously supplying air having an air pressure of 12 kgf / cm 2 into the air entanglement nozzle (3). ), And heat-treated yarn was heat-treated at 190 ℃ in a hollow heater (6) to prepare an air-weaving (air-texturing) processed yarn.

The total fineness of the manufactured air annealed (air texuring) processor was 52.7 denier, the instability was 0.54%, and the unevenness (U%) was 2.37%.

Next, the air yarn processing (air-texturing) processed yarn prepared as described above was used as the surface yarn, and nylon 6 multifilament of 40 denier / 12 filaments was used as the backside yarn. The tissue of the backside was 1-2 / 1-0, and the warp knit dough was cut out at a density of 30 gauge.

The warp knitted paper dough thus obtained was passed through hot water at 90 ° C. at a rate of 25 m / min, and then refined at 80 ° C. for 30 minutes, preheated at 170 ° C., dyed at 100 ° C. for 40 minutes, and finally opened at 170 ° C. The warp knitted paper was prepared.

The results of evaluation of the touch, hardness, and knitting efficiency of the manufactured warp knitted paper were shown in Table 1.

Example  2

When weaving, the surface twisted yarns of 40 denier / 34 filament nylon 6 filament were subjected to air entanglement under the same conditions as in Example 1 (air texuring) processed yarn (total fineness: 41.8 denier, instability 0.61%, unevenness) 2.23%) was used to prepare a warp knitted paper in the same process as in Example 1.

The results of evaluating the touch, hardness and knitting efficiency of the manufactured warp knitted paper were shown in Table 1.

Example  3

A warp knitted paper was prepared in the same manner as in Example 1 except that 40 denier spandex (polyurethane) yarn was used as the back side yarn during the knitting process.

The results of evaluating the touch, hardness and knitting efficiency of the manufactured warp knitted paper were shown in Table 1.

Comparative Example  One

The warp knitted paper was prepared by the same process as in Example 1 except that 50 denier / 48 filament nylon 6 filament (not air-treating) was used as the surface yarn during the knitting process.

The results of evaluating the touch, hardness and knitting efficiency of the manufactured warp knitted paper were shown in Table 1.

Comparative Example  2

The same process as in Example 1, except that 50 denier / 48 filament nylon 6 filament (not air-treated) was used as the surface yarn when weaving, and 40 denier spantex (polyurethane) yarn was used as the backside yarn during the knitting process. Warp knitted paper was prepared.

The results of evaluating the touch, hardness and knitting efficiency of the manufactured warp knitted paper were shown in Table 1.

Comparative Example  3

One of the two strands of nylon 6 multifilament of 20 denier / 13 filament is used as the screening and the remaining one is used as the superfine yarn.The above screening is 12% overfeed rate, and the superfiber yarn has an overfeed rate of 26%. Each was supplied to a processing nozzle, and these were heat-treated to 190 ° C by air-interlaced yarns at an air pressure of 10 kfg / cm 2 to prepare an air-texturing processed yarn.

Next, the air yarn processing (air-texturing) processed yarn prepared as described above was used as the surface yarn, and nylon 6 multifilament of 40 denier / 12 filaments was used as the backside yarn. The tissue of the backside was 1-2 / 1-0, and the warp knit dough was cut out at a density of 30 gauge.

The warp knitted paper dough thus obtained was passed through hot water at 90 ° C. at a rate of 25 m / min, and then refined at 80 ° C. for 30 minutes, preheated at 170 ° C., dyed at 100 ° C. for 40 minutes, and finally opened at 170 ° C. The warp knitted paper was prepared.

The results of evaluation of the touch, hardness, and knitting efficiency of the manufactured warp knitted paper were shown in Table 1.

Evaluation results on the feel, firmness, and knitting efficiency of warp knitted paper division Feel of light letter Kyung Sung Jeong
(Cuts) Knitting Efficiency
(%) Example 1 Tactile expression such as warp knitted fabric made of cotton spun yarn 3.5 95 Example 2 Tactile expression such as warp knitted fabric made of cotton spun yarn 4.2 94 Example 3 Tactile expression such as warp knitted fabric made of cotton spun yarn 3.5 93 Comparative Example 1 No texture like warp knitted fabric made from cotton spun yarn 0.7 92 Comparative Example 2 No texture like warp knitted fabric made from cotton spun yarn 1.3 95 Comparative Example 3 Tactile expression such as warp knitted fabric made of cotton spun yarn 130 40

In the present invention, the loop is formed uniformly on the surface and the synthetic multifilament yarns having fine fineness are mainly arranged to express a touch like cotton spun yarn, and are excellent in lightness and refreshing feeling.

Claims (8)

A single strand of synthetic multifilament is air-cylinderized on the surface part, so that the fine-grained synthetic multifilament yarn with 0.1-1.0% instability is arranged, and the synthetic multifilament is arranged on the back side of the warp knitted fabric. Composite multifilament warp knitted with. The synthetic multifilament diameter of claim 1, wherein a part of the fine-grained synthetic multifilament yarn and the synthetic multifilament are connected to each other in a loop shape so that the surface portion and the back surface portion of the warp knitted paper are composed of one layer. letter. 3. The synthetic multifilament warp knitted fabric according to claim 1 or 2, wherein the total fineness increase rate of the air finely processed fine multifilament yarn compared to the total fineness of the synthetic multifilament before air entanglement is 1 to 8%. The synthetic multifilament warp knitted fabric according to claim 1 or 2, wherein the fineness of the fine-grained synthetic multifilament yarn (U%) is 1.5 to 3.5%. The synthetic multifilament warp knitted fabric according to claim 1 or 2, wherein the total fineness of the fine-grained synthetic multifilament yarn is 20 to 75 denier. The synthetic multifilament warp knitted fabric according to claim 1 or 2, wherein the single yarn fineness of the fine-grained synthetic multifilament yarn is 0.5 to 1.5 denier. The synthetic multifilament warp knitted fabric according to claim 1 or 2, wherein the synthetic multifilament is one selected from polyamide multifilament and polyester. delete

Images