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Bicomponent conjugate fibers, complex yarns and fabrics having high crimping property

Inactive Publication Date: 2016-08-04
SHINKONG SYNTHETIC FIBERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides bicomponent conjugate fibers with high crimping and resilience.

Problems solved by technology

In general, the shrinkage difference of polymers produced by the same materials is smaller and therefore, it is not easy to produce high shrinkage required by the demand of high elasticity.
However, the CI (Crimp Index, i.e., a flexibility index) of the fibers produced by said method is not satisfactory.

Method used

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  • Bicomponent conjugate fibers, complex yarns and fabrics having high crimping property

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0040]The bicomponent conjugate fibers of Example 1 were prepared according to the method as described below. By using a screw extruder, the PBT-TYPE TPEE (the first component) having the intrinsic viscosity of 1.8 dl / g was melted at the melt temperature of 250° C., and the PET (the second component) having the intrinsic viscosity of 0.45 dl / g was melted at the melt temperature of 280° C., which were then quantitatively discharged, respectively. The first component and the second component were mixed in a weight ratio of 20:80 and then placed in a spinning cabinet at a spinning temperature of 285° C., which were subsequently extruded through a complex and side-by-side spinneret assembly, cooled down with cooling air and then spun and drawn at a spinning rate of 4000 m / min, a drawing temperature of 80° C., a heat setting temperature of 140° C. and a drawing ratio of 2.1 to produce 75 / 24 bicomponent fully drawn yarns (FDY). The results of the produced fibers are shown in Table 1.

example 2

[0041]The bicomponent conjugate fibers of Example 2 were prepared according to the production method described in Example 1, wherein the weight ratio of the first component and the second component was substituted with 50:50. The results of the produced fibers are shown in Table 1.

example 3

[0042]The bicomponent conjugate fibers of Example 3 were prepared according to the production method described in Example 1, wherein the weight ratio of the first component and the second component was substituted with 80:20. The results of the produced fibers are shown in Table 1.

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Abstract

The present invention relates to bicomponent conjugate fibers having excellent crimping property, comprising: (A) a thermoplastic polyester elastomer (TPEE) as a first component, and (B) a polyester polymer as a second component. The present invention also relates to yarns and fabrics comprising said bicomponent conjugate fibers.

Description

FIELD OF THE INVENTION[0001]The present invention relates to bicomponent conjugate fibers having excellent crimping property, comprising: (A) a thermoplastic polyester elastomer (TPEE) as a first component, and (B) a polyester polymer as a second component. The present invention also relates to yarns and fabrics comprising said bicomponent conjugate fibers.BACKGROUND OF THE INVENTION[0002]Self-crimping properties of conjugate fibers can mainly be generated from the manufacturing process of side-by-side bicomponent fibers. Due to different intrinsic viscosity (IV) between two polymers for forming the conjugate fibers, said two polymers have different shrinkages which lead to three-dimensional crimp of the fibers. Self-crimping property is a crimping potential inevitably created by differences in the amount of shrinkage, the degree of shrinkage and the module of elasticity of the two polymers. In addition to shrinkage differences as a prerequisite for self-crimping property, good adhe...

Claims

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Application Information

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IPC IPC(8): D01F8/14D02G3/34D01F8/16D03D15/56D03D15/567
CPCD01F8/14D02G3/34D01F8/16
Inventor TU, YI JENWU, KUO CHUNGHSIEH, CHIH-LUNGLIN, CANG-JIEYU, HSIANG
Owner SHINKONG SYNTHETIC FIBERS
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