KR100207891B1 - Process for mixed yarn having different shrinkage - Google Patents

Abstract

The present invention relates to a method for designing and blending constituent yarns with respect to polyester filament biaxially blended yarns. To 20 A non-drawn yarn is produced at 10 ^-3 , and a high-oriented non-drawn yarn has a speed of 1,700 to 5,000 m / min and an orientation of 15 to 90 A non-drawn yarn with a low orientation when producing a non-twisted group at 10 ^-3 and drawing it, a draw ratio of 2.0 to 3.5, a heating roller temperature of 70 to 100 Hot Plate Temperature Room Temperature ~ 220 The non-drawn yarn of high orientation maintains its inherent physical properties, and the two yarns are composited at a high speed again using a drawing machine, so that the constituent yarn of high orientation of biaxially blended yarn has an orientation of 15 to 90 degrees. Maintaining 10 ^-3 and low orientation constituent yarns are stretched to 150 ~ 200 by stretching A method for producing bishrink blended yarns, characterized in that 10 ^-3 is given and mixed.

At this time, the entanglement treatment is characterized in that 20 or more given per meter.

Description

Manufacturing method of Isu shrink blended yarn

1 is a process schematic diagram of the present invention.

* Explanation of symbols for main parts of the drawings

A: One of the member companies B: One of the other members

1: tension control device 2: feed roller

3: heating roller 4: heating plate

5: stretching roller 6: fluid interlocking device

7: winding part

The present invention relates to a method for manufacturing biaxially blended yarn, and more specifically, one of the two unstretched yarn groups of polyester filament unstretched yarn having different spinning conditions is drawn on a drawing machine by design, and then the stretched yarn and the unstretched yarn are composited at high speed. In addition, by imparting a entanglement with a fluid treatment device, it is intended to manufacture a biaxial blended yarn having a large shrinkage difference and excellent industrial performance.

In addition, in the production, the shrinkage behavior of each yarn property in the post-weaving process is carefully examined, and based on this, it is introduced into the spinning and / or new-year technology, so that the shrinkage force difference of the yarn can be expressed as much as possible after the weaving process. It is about.

In the case of conventional shrink shrink blended yarns,

1) General polyester polyester, a method of compounding a modified high shrink polyester polymer.

2) A method of combining cold drawn and hot drawn yarns in general polyester.

3) There was a method of stretching and combining high-speed yarn and low-speed yarn at the same time.

However, in the above method 1), the shrinkage difference of the yarn itself was not expressed after the fabric process, and there was a problem in that the cost of the high shrink polymer was high. After receiving heat in the process, the shrinkage force is greatly reduced and less effective on the fabric, even when used as a weft, there was a problem of pharmaceutical use.

In the method of 3), when the same orientation ratio is drawn with the high orientation yarn and the low orientation yarn, the high orientation yarn can be drawn at the same extension ratio, but the low orientation yarn has irregular tassel portion due to the relatively low extension ratio.

In order to solve this problem, the draw ratio and the draw temperature were increased, but the fine results were obtained as described above. In addition, in terms of effects, the shrinkage condition is insufficient compared to the production method of the present invention, the development of larger shrinkage blended yarn is required in terms of effects.

In order to solve the above problems, the present invention significantly improves the workability and processability of the weaving process, increases productivity, and inexpensively manufactures the fabric, while in terms of the fabric effect, it has a high soft touch, bulkiness, The purpose of the present invention is to prepare a biaxial blended fiber that can express deep color and good drape on a fabric.

In the present invention, in the production of polyester non-twisted group containing polyethylene terephthalate as the main structural unit, one of the non-twisted groups is spun at a spinning speed of 1,000 to 2,000 m / min, and the orientation thereof is 5.0. 10 ^-3 to 20.0 A low-oriented polyester non-drawn yarn with 10 ^-3 was made and the other uncalculated group spun at a spinning speed of 1,700-5,000 m / min, giving a degree of orientation of 15.0 10 ^-3 to 90.0 After making a relatively high oriented undrawn yarn of 10 ^-3 , the low oriented polyester undrawn yarn has a draw ratio of 2.0 to 3.5 and a heating roller temperature of 70 to 100 Hot Plate Temperature Room Temperature ~ 220 The unstretched polyester of high orientation and high orientation does not stretch and maintains its own physical properties so that the two yarns are combined again at high speed on the stretching machine and passed through a fluid entanglement device to be wound up after entanglement treatment.

At this time, the composite shrinkage mixed yarn property is 15 ~ 90 Keep 10 ^-3 and the other component is 150 ~ 200 due to stretching Designed to remain at 10 ^-3 .

In addition, the number of entangled Isuchuk blended yarns should be more than 20 / m.

As described above, the polyester fiber of the present invention is a polymer having ethylene terephthalate as its main structural unit, and polyester having ethylene terephthalate of 85 mol% or more, and its intrinsic viscosity is 0.5 to 0.8 in terms of physical properties. The range of / g is preferable.

As described above, the low-stretched non-stretched group has a spinning speed of 1,000 to 2,000 m / min and an orientation of 5.0 to 20.0 When the drawing ratio is 10 to ³ , the drawing ratio is 2.0 to 3.5, and when the drawing ratio is lower than 2.0, saltiness or instability is increased, and when the drawing ratio is higher than 3.5, overdrawing causes bad effects on the process and induces moor.

Heat roller temperature is 70 ~ 100 70 in Roh If lower, draw instability is a problem and 100 When exceeded, the single-shot rate becomes high and fairness becomes bad.

Stretched heating plate temperature is room temperature ~ 220 220 in Roh If higher, there is a risk of dying after the fabric is processed.

The non-twisted group of high orientation has a spinning speed of 1,700 to 5,000 m / min and an orientation of 15 to 90 10 ^-3 to be combined with the other company without changing the physical properties on the drawing machine.

1,900m / min, high degree of orientation, unoriented yarn of high orientation If the radiation condition and orientation is lower than 10 ^-3 , the possibility of partial fusion due to heat intrusion during the weaving process increases, which makes the stiffness and stiffness occurring, 5,000m / min or more, and the orientation degree 96 If it is more than 10 ^-3 , productivity increases but is disadvantageous in terms of effects.

In the case of combining the two yarns in the fluid entanglement device, the tension before and after the entanglement device is kept constant to impart entanglement, and the number of entanglements is 20 / m or more.

If the entanglement is less than 20 / m, the interweaving ratio between the two yarns is poor, and the weaving property is poor, and the color tone due to the difference in dyeing degree of the constituent yarn on the fabric is increased.

In case of heat treatment under the same tension as the general fabric preparation process using the shrink shrink blended yarn, one type of yarn exhibits stretch performance designed from yarn, and the other type of yarn exhibits great shrinkage force, resulting in 20% shrinkage between the two yarns. The above contraction force difference is obtained.

In the fabric woven in the present invention, the above-described effects of high volume, soft touch, deep color, and good drape can be obtained.

Hereinafter, the present invention will be described through Examples and Comparative Examples.

However, the present invention is not limited to the examples.

Example 1

3,500m / min, high degree of orientation 61 It is produced at 10 ^-3 , and the unoriented yarn of low orientation is discharged at 1,200 m / min, orientation degree 8 When prepared in 10 ^-3 and composited after stretching as described above, a biaxial blended fiber obtained in the preparation and weaving during the post-process is particularly good and the characteristic effect is very high.

Example 2

2100 m / min of high unoriented stretched yarn, 26 degree of orientation It is produced in 10 ^-3 , and the non-oriented yarn of low orientation is discharged 1,400m / min, orientation degree 11 When prepared in 10 ^-3 and composited after stretching as described above, the preparation and weaving at the time of the post-process is particularly good, and the biaxially blended yarn is obtained in which the biaxial shrinkage effect is greatly expressed.

Comparative Example 1

5,300m / min, orientation degree 115 It is produced in 10 ^-3 , and the non-oriented yarn of low orientation is discharged 1,400m / min, orientation degree 11 When prepared in 10 ^-3 , the composite after stretching as described above, the productivity is improved, and the preparation weaving during the post-process is good, but the specific effect is not largely expressed, the specific effect of the diaxial mixed fiber was not expressed.

Comparative Example 2

1,500m / min, high degree of orientation of undrawn yarn with high orientation It is produced in 10 ^-3 , and the non-oriented yarn of low orientation is discharged 1,400m / min, orientation degree 11 When the composite is prepared in the range of 10 ^-3 and stretched as described above, the preparation and weaving during the post-processing are poor due to the fragility of the yarn and are fused by heat, which adversely affects the feel.

Table 1 shows the spinning, stretching conditions and the characteristics of the fabric of each Example and Comparative Example.

Claims (2)

In producing polyester biaxially blended yarn, low-oriented undrawn yarn has a flux of 1,000 to 2,000 m / min and an orientation of 5 to 20 A non-drawn yarn is produced at 10 ^-3 , and a high-oriented non-drawn yarn has a speed of 1,700 to 5,000 m / min and an orientation of 15 to 90 A non-drawn yarn with a low orientation when producing a non-twisted group at 10 ^-3 and drawing it, a draw ratio of 2.0 to 3.5, a heating roller temperature of 70 to 100 Hot Plate Temperature Room Temperature ~ 220 The non-drawn yarn of high orientation maintains its inherent physical properties, and the two yarns are composited at a high speed again using a drawing machine, so that the constituent yarn of high orientation of biaxially blended yarn has an orientation of 15 to 90 degrees. Maintaining 10 ^-3 and low orientation constituent yarns are stretched to 150 ~ 200 by stretching A method for producing bishrink blended yarns, characterized in that 10 ^-3 is given and mixed. The method for producing biaxial blended yarn according to claim 1, wherein 20 or more entanglement treatments are provided per meter.