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A three-dimensional elastic color-spinning fiber and its spinneret

A three-dimensional, composite elastic fiber technology, applied in fiber processing, filament/thread forming, conjugated synthetic polymer artificial filament, etc., can solve problems such as unsmooth spinning, two-component cracking, spinneret bending angle And other problems, to achieve the effect of improving moisture absorption and perspiration function, good color rotation effect, and good visual effect

Active Publication Date: 2018-01-02
TAICANG RONGWEN SYNTHETIC FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the spinning process, the two-component high polymer often has a "bend 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 three-dimensional elastic color-spinning fiber and its spinneret
  • A three-dimensional elastic color-spinning fiber and its spinneret
  • A three-dimensional elastic color-spinning fiber and its spinneret

Examples

Experimental program
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Effect test

example 1

[0027] 1. Raw materials and their specific indicators:

[0028] ECDP chips: intrinsic viscosity 0.58dl / g, melting point 240°C

[0029] PET chips: intrinsic viscosity 0.87dl / g, melting point 265°C

[0030] 2. Spinning process conditions:

[0031] The ECDP slices with an intrinsic viscosity of 0.58dl / g were vacuum-dried at 100°C for 8 hours, and the PET slices with an intrinsic viscosity of 0.87dl / g were dried; the two slices were sent to a twin-screw extruder for melt extrusion, The melts of the two components use two sets of metering pumps respectively, enter the composite spinning assembly through the melt pipe, and are sprayed out from the spinneret; into, spinneret micropores such as figure 1 As shown, the diameter of the circular hole is 0.34mm; the channel center height of the connecting section is 0.02mm, and the length of the connecting section is 0.04mm. The arrangement of the spinneret microholes is as follows: image 3 shown. The spinning temperature ECDP is 28...

example 2

[0034] Take the preparation of side-by-side composite ECDP / PET side-by-side composite fibers as an example.

[0035] 1. Raw materials and their specific indicators:

[0036] ECDP chips: intrinsic viscosity 0.51dl / g, melting point 238°C

[0037] PET chips: intrinsic viscosity 0.72dl / g, melting point 262°C

[0038] 2. Spinning process conditions:

[0039] The ECDP chips with an intrinsic viscosity of 0.51dl / g were vacuum-dried at 100°C for 15 hours, and the PET chips with an intrinsic viscosity of 0.72dl / g were dried; the two kinds of chips were sent to a twin-screw extruder for 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; the spinneret micropores of the spinneret are formed by connecting two identical ellipses through the connecting section , spinneret micropores such as figure 2As shown, the long diameter of the elliptica...

example 3

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

[0043] 1. Raw materials and their specific indicators:

[0044] ECDP chips: intrinsic viscosity 0.55dl / g, melting point 240°C

[0045] PET chips: intrinsic viscosity 0.80dl / g, melting point 265°C

[0046] 2. Spinning process conditions:

[0047] The ECDP chips with an intrinsic viscosity of 0.55dl / g were vacuum-dried at 100°C for 10 hours, and the PET chips with an intrinsic viscosity of 0.80dl / g were dried; the two kinds of chips were sent to a twin-screw extruder for melt extrusion, The melts of the two components use two sets of metering pumps respectively, enter the composite spinning assembly through the melt pipe, and are sprayed out from the spinneret; into, spinneret micropores such as figure 1 As shown, the diameter of the circular hole is 0.40mm; the channel center height of the connecting section is 0.03mm, and the length of the connecting section is 0.0...

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Abstract

The invention relates to a three-dimensional elastic color-spinning fiber and a spinneret for its manufacture. The difference in dyeing rate between the two components of the three-dimensional elastic color-spinning fiber and the three-dimensional helical crimp structure of the parallel composite fibers ensure the three-dimensional three-dimensional elastic color-spinning fiber. The unique color rotation effect of elastic color rotation fiber. Including (1) the shape of the spinneret microholes for producing this fiber is "8" (2) composite spinning components, special-shaped spinning components (3) grooves on the fiber surface can improve the moisture absorption and perspiration performance of the fibers . The fiber has stable crimp recovery, the manufacturing process is simple, the elastic range can be adjusted according to the heat treatment process, and can be widely used in sportswear, underwear, webbing, etc.

Description

technical field [0001] The invention relates to a three-dimensional elastic color-spinning fiber and a spinneret for manufacturing the three-dimensional elastic color-spinning fiber. Background technique [0002] With DuPont launching large-scale production of Lycra (Lycra) products, elastic fiber has attracted widespread attention. It is called spandex in China. The elongation of polyurethane elastic fiber is very large, and its strength and aging resistance are better than rubber. Silk, get people's favor. However, due to the complex production equipment and process of polyurethane elastic fiber, the high cost of raw materials and processing, and serious pollution, its application is greatly restricted. [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 curly elastic fiber made of two polymers with different structures or properties through bi-component composite ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/28D01D5/253D01F8/14
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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