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A sea-island composite fiber

A composite fiber, sea island technology, applied in the direction of conjugated synthetic polymer rayon, etc., can solve the problems of interface peeling, poor compatibility, fiber surface cracking, etc.

Active Publication Date: 2018-03-27
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor compatibility of polypropylene and polyester, problems such as interfacial peeling and fiber surface cracking may occur in the post-processing of fibers and the production and use of fabrics.

Method used

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  • A sea-island composite fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Polyester (PET) is used as the sea component, polypropylene (PP) is the island component, and the sea-island weight ratio is 30 / 70. It is spun on a spinning machine equipped with a distribution-type sea-island composite spinneret. After melt spinning, Sea-island composite fibers with a denier of 84detx and a single fiber count of 48 were obtained after false twisting. After measurement, the density of the obtained fiber is 1.01g / cm 3 , the strength is 1.87cN / dtex, the U% value is 0.68, the distance between the outer surface of the outermost island and the fiber surface is 0.71μm, the number of small islands in a single fiber is 90, and the number of large islands is 1. The area of ​​the big island is 88 times that of the small island, and the cross-sectional shape of the small island is circular.

[0057] After the fiber is made into a fabric, it is dyed with a disperse dye, and its L * It is 18.1, and the dyeability is excellent; the light fastness of the fabric reac...

Embodiment 2

[0059] Polyester (PET) is used as the sea component, polypropylene (PP) is the island component, and the sea-island weight ratio is 20 / 80. It is spun on a spinning machine equipped with a distribution-type sea-island composite spinneret. After melt spinning, After false twisting, a lightweight sea-island composite fiber with a denier of 84detx and a single fiber number of 48 was obtained. After measurement, the density of the obtained fiber is 0.98g / cm 3 , the strength is 1.53cN / dtex, the U% value is 0.96, the distance between the outer surface of the outermost island and the fiber surface is 0.6μm, the number of small islands in a single fiber is 90, and the number of large islands is 1. The area of ​​the big island is 88 times that of the small one, and the cross-sectional shape of the small island is circular.

[0060] After the fiber is made into a fabric, it is dyed with a disperse dye, and its L * 20, excellent dyeability; the light fastness of the fabric reaches level...

Embodiment 3

[0062] Polyester (PET) is used as the sea component, polypropylene (PP) is the island component, and the sea-island weight ratio is 40 / 60. It is spun on a spinning machine equipped with a distribution-type sea-island composite spinneret. After melt spinning, After false twisting, a lightweight sea-island composite fiber with a denier of 84detx and a single fiber number of 48 was obtained. After measurement, the density of the obtained fiber is 1.05g / cm 3 , the strength is 2.13cN / dtex, the U% value is 0.59, the distance between the outer surface of the outermost island and the fiber surface is 0.93μm, the number of small islands in a single fiber is 90, and the number of large islands is 1. The area of ​​the big island is 88 times that of the small one, and the cross-sectional shape of the small island is circular.

[0063] After the fiber is made into a fabric, it is dyed with a disperse dye, and its L * It is 16.3, excellent dyeability; the light fastness of the fabric reac...

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Abstract

The invention discloses a sea-island composite fiber, wherein the sea component is a thermoplastic polymer, and the island component is polypropylene; the number of islands on the cross section of a single fiber is 10 to 1000, and the area of ​​the largest island is 10 times that of the smallest island. 200 times; wherein the distance between the outermost island surface and the fiber surface is 0.6 μm-3.0 μm; the density of the sea-island composite fiber is 0.95-1.20 g / cm3. The sea-island composite fiber not only retains the lightness of polypropylene, but also has excellent spinnability and processability, and the fabric made of the above fiber has good dyeability and heat resistance.

Description

technical field [0001] The invention relates to a sea-island composite fiber whose island component is polypropylene. Background technique [0002] Since entering the 21st century, due to the development of textile products gradually becoming thinner, the density is 1.0g / cm 3 Lightweight fibers on the left and right also follow. Lightweight fiber has superior performance, high added value and diversified functions, and has attracted extensive attention from the world's chemical fiber industry. [0003] There are many means to realize fiber weight reduction. Patent CN200920039325.5 discloses a hollow fiber, which achieves the purpose of weight reduction through the middle gap. However, the mesopore ratio of this kind of hollow fiber is small and difficult to control, and there will be problems such as insufficient light weight and uneven fiber surface. At the same time, after the hollow fiber false twisting and elastic processing, the hollow deformation will become smaller...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/06D01F8/14
Inventor 倪春健望月克彦
Owner TORAY IND INC