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A kind of gray elastic fiber and preparation method thereof

An elastic fiber, gray technology, applied in the field of polyester fiber, can solve the problems of inability to spin smoothly, cracking of two components, poor compatibility, etc. Effect

Active Publication Date: 2017-02-08
TAICANG RONGWEN SYNTHETIC FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the spinning process, the two-component high polymer often has a "bending angle" problem at the spinneret due to different viscosities during the spinning process and cannot be spun smoothly, or the two components are cracked due to poor compatibility.
At present, the cross-sectional shapes of the two components of most side-by-side composite fibers on the market are symmetrically distributed, and there is no asymmetric structure of side-by-side composite fibers.

Method used

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  • A kind of gray elastic fiber and preparation method thereof
  • A kind of gray elastic fiber and preparation method thereof
  • A kind of gray elastic fiber and preparation method thereof

Examples

Experimental program
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Effect test

example 1

[0030] Take the preparation of side-by-side composite black PET / common PET side-by-side composite fibers as an example.

[0031] Raw materials and their specific indicators:

[0032] Black PET chips: intrinsic viscosity 0.73dl / g, melting point 263°C

[0033] Ordinary PET chips: intrinsic viscosity 0.69dl / g, melting point 260°C

[0034] Spinning process conditions:

[0035] The black PET chips with an intrinsic viscosity of 0.73dl / g and the ordinary PET chips with an intrinsic viscosity of 0.69dl / g were vacuum-dried at 100°C for 8 hours respectively, and then the two dried chips were sent to the twin-screw extruder respectively Internal melt extrusion, the melts of the two components use two sets of metering pumps respectively, enter the composite spinning assembly through the melt pipeline, and are sprayed out from the spinneret. figure 1 Side-by-side composite fibers shown. Among them, the use of image 3 The spinneret of the spinneret microholes in the arrangement shown...

example 2

[0042] Take the preparation of side-by-side composite black PET / common PET side-by-side composite fibers as an example.

[0043] Raw materials and their specific indicators:

[0044] Black PET chips: intrinsic viscosity 0.76dl / g, melting point 269°C

[0045] Ordinary PET chips: intrinsic viscosity 0.72dl / g, melting point 265°C

[0046] Spinning process conditions:

[0047] The black PET chips with an intrinsic viscosity of 0.76dl / g and the ordinary PET chips with an intrinsic viscosity of 0.72dl / g were vacuum-dried at 100°C for 8 hours respectively, and then the two dried chips were sent to the twin-screw extruder respectively Internal melt extrusion, the melts of the two components use two sets of metering pumps respectively, enter the composite spinning assembly through the melt pipeline, and spray out from the spinneret. figure 2 Side-by-side composite fibers shown. Among them, the use of Figure 4 The spinneret of the spinneret microholes in the arrangement shown, th...

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Abstract

The invention provides a gray elastic fiber and a preparing method thereof. The gray elastic fiber is a complex fiber with two parallel components. In the cross section of the fiber, the shapes of the two parallel components are in a similar L shape, the two similar L shapes are connected through an outer connection, and the cross section of the gray elastic fiber is in a similar cross shape. The gray elastic fiber is obtained by spinning black PET slices and ordinary PET slices, and due to the fact that the two fibers are different in color, compared with an ordinary elastic fiber, the gray elastic fiber has a very good color effect, and the spun fiber is directly gray. The gray elastic fiber is a three-dimensional elastic fiber, and therefore compared with the ordinary fiber, the gray elastic fiber has a better visual effect and has the effect of changing colors layer by layer.

Description

technical field [0001] The invention relates to the field of polyester fibers, in particular to a gray elastic fiber and a preparation method thereof. Background technique [0002] Elastic fibers have attracted worldwide attention. Domestically, it is called spandex. Polyurethane elastic fiber has great elongation, strength, aging resistance and other properties that are better than rubber silk, so it is favored by people. However, due to the complex production equipment and process of polyurethane elastic fiber, the high cost of raw materials and processing, serious pollution and other problems limit its application. [0003] Side-by-side composite fibers use two polymer materials with different shrinkage properties to produce side-by-side structure fibers. This is a type of crimped elastic fiber made of two polymers with different structures or properties through bi-component composite spinning. Two kinds of high polymers with different characteristics are formed into tw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/32D01D5/253D01D13/00D01F8/14
Inventor 史原王朝生郁铭芳李夏全潇陶景良苏立平肖庆浦雪强金志明朗俊逸
Owner TAICANG RONGWEN SYNTHETIC FIBER
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