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Differential linear density blend fiber and preparation method for same

A technology of different deniers and manufacturing methods, which is applied in the field of mixed fibers of different deniers and the preparation of the blended fibers, can solve the problems of monofilament fineness and thickness limitation, insufficient softness of fabrics, etc., and achieve excellent hand feeling and dyeability, excellent dyeing effect

Inactive Publication Date: 2016-04-06
TORAY FIBER RES INST(CHINA) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the above two published patents have realized the different fineness of fibers, no matter whether it is a one-step melting method or a common split spinneret technology, the fineness and thickness of the monofilament obtained are limited, and the resulting fabric has Disadvantages of lack of flexibility

Method used

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  • Differential linear density blend fiber and preparation method for same

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Effect test

specific Embodiment approach

[0023] The test method that the present invention relates to is as follows:

[0024] (1) Fineness

[0025] Tested according to standard JISL1013:2010.

[0026] (2) The number of islands on the cross-section of a single fiber

[0027] Cut the fiber into thin slices along the long direction (that is, the fiber cross section), and observe the number of islands under an ordinary optical microscope.

[0028] (3) Cross-sectional area of ​​a single island

[0029] Cut the sea-island composite fiber into thin slices along the cross-section of the fiber, and then use the SS550 type walk-through electron microscope (SEM) produced by Shimadzu to take photos of the obtained fiber cross-section at an appropriate magnification. Then use the image processing software (WINROOF) to calculate the island area of ​​the photos, and the final result is represented by the average value of 10 sea-island composite fiber sections.

[0030] (4) Dyeing evaluation

[0031] The combined fiber is subje...

Embodiment 1

[0044] Alkali-reduced polyester is used as the sea component, common polyester is the island component, and the sea-island weight ratio is 30 / 70. It is obtained after melt spinning and false twisting on a spinning machine equipped with a distribution-type sea-island composite spinneret. Sea-island composite fiber with a fineness of 82.5detx and a single fiber count of 15. It was determined that the island area of ​​the obtained fiber was 0.1 μm 2 , the number of small islands is 250, and the area of ​​large islands is 250 μm 2 , the number of large islands is 1, the cross-sectional shapes of the small islands and large islands are circular, and the small islands and large islands are arranged randomly.

[0045] After the fiber is made into a fabric, it is used for weight reduction processing, and then dyed with a disperse dye. The L* of the fiber is tested to be 15.0, and the dyeability is excellent; the softness evaluation result is soft.

Embodiment 2

[0047] Alkali-reduced polyester is used as the sea component, common polyester is the island component, and the sea-island weight ratio is 30 / 70. It is obtained after melt spinning and false twisting on a spinning machine equipped with a distribution-type sea-island composite spinneret. A sea-island composite fiber with a fineness of 187.6detx and a single fiber number of 15. It was determined that the island area of ​​the obtained fiber was 0.1 μm 2 , the number of small islands is 250, and the area of ​​large islands is 200 μm 2 , the number of large islands is 3, and the cross-sectional shapes of the small island and the large island are circular. At the same time, the large island is arranged on the outside of the small island.

[0048] After the fiber is made into a fabric, it is used for weight reduction processing, and then dyed with a disperse dye. The L* of the fiber is tested to be 13.7, and the dyeability is excellent; the softness evaluation result is soft.

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Abstract

The invention discloses a differential linear density blend fiber and a preparation method for the same. The blend fiber is a thermoplastic polymer fiber. The cross section area of a small-fineness fiber is 0.1 to 2.0 [mu]m<2>; the cross section area of a large-fineness fiber is 20 to 300 [mu]m<2>; and the number of small-fineness fibers is 5 to 300 times of the number of the large-fineness fibers. The fiber can be prepared by island complex fibers with sea component alkali peeling polyester and island component thermoplastic polyesters in a decrement way. The blend fiber can be manufactured into fabric with softness and excellent dying performance.

Description

technical field [0001] The invention relates to a mixed fiber with different deniers and a preparation method of the mixed fiber. Background technique [0002] The use of synthetic fibers in clothing materials is expanding year by year, and consumers' requirements for fiber products are constantly increasing. In recent years, the fiber industry has actively carried out the research and development of high-performance fibers. In recent years, many blended fibers containing polyester have appeared on the market. Such as Chinese patent CN1368564 discloses a kind of manufacturing method of polyester full-stretched yarn one-step method three different mixed fiber polyester filaments, this method mainly makes FDY yarn with HOY or HOY or The POY tows are combined to obtain three different mixed filaments. Chinese patent CN1356411A discloses a method for making fibers with different deniers and different cross-sections. The fiber with different deniers is obtained mainly by utiliz...

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 Applications(China)
IPC IPC(8): D01D5/30D01F8/14
Inventor 倪春健季亚娟望月克彦
Owner TORAY FIBER RES INST(CHINA) CO LTD
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