Sea-island polyester drawn yarn and preparation method thereof

A technology of polyester drawn yarn and sea-island type is applied in the field of sea-island type polyester drawn yarn and its preparation. Restorative effect

Active Publication Date: 2011-03-02
ZHANGJIAGANG JINYI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong rigidity of PET and difficulty in curling, PET / COPET blended sea-island fibers have the disadvantage of low color uptake

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The island-in-the-sea type polyester drawing yarn, the composition of the island is PTT, and the composition of the sea is COPET, wherein the mass percentage of PTT is 65%, and the mass percentage of COPET is 35%. The number of islands in the cross section of the finished sea-island type polyester drawn yarn is 1200 islands / fiber. The linear density range of the finished sea-island type polyester drawn yarn is 100dtex.

[0017] The preparation method of above-mentioned sea-island type polyester drawing yarn, comprises the following steps:

[0018] a. Dry the PTT slices by means of fluidized bed pre-crystallization continuous drying. The hot air temperature during drying is 140°C, the time is 8 hours, the dew point temperature is below -80°C, and the PTT slices are recrystallized after drying. The moisture content of the slices is controlled below 25ppm;

[0019] b. Melt the dried PTT chips and COPET chips through different screw extruders respectively, and then enter ...

Embodiment 2

[0023] The island-in-the-sea type polyester drawing yarn, the composition of the island is PTT, and the composition of the sea is COPET, wherein the mass percentage of PTT is 70%, and the mass percentage of COPET is 30%. The number of islands in the cross section of the finished sea-island type polyester drawn yarn is 500-1500 islands / fiber. The linear density range of the finished sea-island type polyester drawn yarn is 200dtex.

[0024] The preparation method of above-mentioned sea-island type polyester drawing yarn, comprises the following steps:

[0025] a. Dry the PTT slices by means of fluidized bed pre-crystallization continuous drying. The hot air temperature during drying is 120°C, the time is 12 hours, the dew point temperature is below -80°C, and the PTT slices are recrystallized after drying. The moisture content of the slices is controlled below 25ppm;

[0026] b. Melt the dried PTT chips and COPET chips through different screw extruders respectively, and then e...

Embodiment 3

[0030] The island-in-the-sea type polyester drawing yarn, the composition of the island is PTT, and the composition of the sea is COPET, wherein the mass percentage of PTT is 75%, and the mass percentage of COPET is 25%. The number of islands in the cross section of the finished sea-island type polyester drawn yarn is 1000 islands / fiber. The linear density range of the finished sea-island type polyester drawn yarn is 250dtex.

[0031] The preparation method of above-mentioned sea-island type polyester drawing yarn, comprises the following steps:

[0032] a. Dry the PTT slices by means of fluidized bed pre-crystallization and continuous drying. The hot air temperature during drying is 140°C, the time is 10 hours, the dew point temperature is below -80°C, and the PTT slices are recrystallized after drying. The moisture content of the slices is controlled below 25ppm;

[0033] b. After melting the dried PTT chips and COPET chips through different screw extruders, they enter the...

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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PUM

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Abstract

The invention discloses a sea-island polyester drawn yarn, of which a sea component is a COPET and an island component is a PTT, and mass percent of the PTT is 65%-75%, and mass percent of the COPET is 25%-35%. A production method of the sea-island polyester drawn yarn comprises the following steps: drying sections of the PTT, and then mixing the PPT with the COPET according to a certain proportion, mixing them in a screw extruder in fusion form, and jetting yarns via a jetting plate, finally, drawing and coiling the yarns to form products. The invention provides a sea-island polyester drawn yarn with high degree of dyeing and a preparation method thereof.

Description

technical field [0001] The invention relates to a fiber and a production method thereof, in particular to a sea-island type polyester drawn yarn and a preparation method thereof. Background technique [0002] The sea-island fiber is a composite fiber formed by dispersing one polymer in another polymer. The dispersed phase in the cross section of the fiber is in the state of "island", while the matrix is ​​equivalent to "sea". After the sea-island fiber is separated, the superfine fiber is obtained. Compared with ordinary fibers, the sea-island fiber has some unique characteristics, and is an ideal raw material for the production of high-end clothing fabrics and decorative fabrics. At present, the sea-island fiber that dominates the market is PET / COPET blended sea-island fiber, where PET is the abbreviation of polyethylene terephthalate, and COPET is the abbreviation of Coppet polyamide fiber. However, due to the strong rigidity of PET and difficulty in crimping, PET / COPET b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/30D01F8/14D01D5/092D01D5/096D01D10/02
Inventor 贲永宝
Owner ZHANGJIAGANG JINYI CHEM FIBER
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