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Parallel self-crimped wool-like elastic fibers and preparation method thereof

An elastic fiber, self-crimping technology, applied in the field of polyester fiber, can solve problems such as uneven stripes

Active Publication Date: 2020-05-08
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a side-by-side self-curling wool-like elastic fiber and its preparation method, the purpose is to solve the problem of applying side-by-side two-component wool-like fiber in the prior art The problem of "uneven stripes" appears in the product

Method used

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  • Parallel self-crimped wool-like elastic fibers and preparation method thereof
  • Parallel self-crimped wool-like elastic fibers and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of preparation method of side by side self-curling hair-like elastic fiber, its process is as follows:

[0044] On the circular spinneret I, the PTT melt (intrinsic viscosity is 1.1dL / g) is directly extruded after distribution, and POY filaments are obtained according to the POY process;

[0045] On the circular spinneret II, after the PET melt (intrinsic viscosity is 0.55dL / g) and PTT melt (intrinsic viscosity as above) with a mass ratio of 50:50 are distributed, the The wire hole m and the spinneret hole n are extruded, and the FDY wire is obtained according to the FDY process;

[0046] Such as figure 1 As shown, on the spinneret II, the distribution refers to distributing the PTT melt through the distribution hole A, and at the same time distributing the PET melt through the distribution hole B into the spinneret m, and distributing the PTT melt through the distribution hole C, At the same time, the PET melt is distributed to the spinneret hole n through the...

Embodiment 2

[0054] A kind of preparation method of side by side self-curling hair-like elastic fiber, its process is as follows:

[0055] On the elliptical spinneret I, the PTT melt (intrinsic viscosity is 1.06dL / g) is directly extruded after distribution, and POY filaments are obtained according to the POY process;

[0056] On the circular spinneret II, after the PET melt (intrinsic viscosity is 0.54dL / g) and PTT melt (intrinsic viscosity as above) with a mass ratio of 50:50 are distributed, the The wire hole m and the spinneret hole n are extruded, and the FDY wire is obtained according to the FDY process;

[0057] On the spinneret II, the distribution refers to distributing the PTT melt through the distribution hole A, and at the same time distributing the PET melt into the spinneret m through the distribution hole B, and distributing the PTT melt through the distribution hole C, and simultaneously distributing the PET The melt is distributed to the spinneret hole n through the distri...

Embodiment 3

[0065] A kind of preparation method of side by side self-curling hair-like elastic fiber, its process is as follows:

[0066] On the circular spinneret I, the PTT melt (intrinsic viscosity is 1.03dL / g) is directly extruded after distribution, and POY filaments are obtained according to the POY process;

[0067] On the circular spinneret II, after the PET melt (intrinsic viscosity is 0.5dL / g) and PTT melt (intrinsic viscosity as above) with a mass ratio of 50:50 are distributed, the The wire hole m and the spinneret hole n are extruded, and the FDY wire is obtained according to the FDY process;

[0068] On the spinneret II, the distribution refers to distributing the PTT melt through the distribution hole A, and at the same time distributing the PET melt into the spinneret m through the distribution hole B, and distributing the PTT melt through the distribution hole C, and simultaneously distributing the PET The melt is distributed to the spinneret hole n through the distribut...

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Abstract

The present invention relates to parallel self-crimped wool-like elastic fibers and a preparation method thereof. POYs and FDYs are subjected to plying doubling and web compounding, and then relaxation heat treatment is performed to prepare the parallel self-crimped wool-like elastic fibers; on a spinneret plate I, a PTT melt is directly extruded after being distributed, and the POYs are preparedaccording to a POY process; on a spinneret plate II, PET and PTT melts are extruded from spinneret holes m and n in the spinneret plate II after being distributed, and the FDYs are prepared accordingto an FDY process, wherein the PTT and PET melts flow to the spinneret holes m through distribution holes A and B and flow to the spinneret holes n through distribution holes C and D; the distributionholes A and B are equal-height cylindrical holes, and the diameter ratio is (1.10-1.50) : 1; and the distribution holes C and D are equal-height cylindrical holes, and the diameter ratio is 1 : (1.10-1.50). The FDYs in the prepared fibers consist of multiple PTT / PET parallel composite monofilaments with different proportions. The problem of strip unevenness of a wool-like fiber knitted fabric issolved.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a side-by-side self-curling wool-like elastic fiber and a preparation method thereof. Background technique [0002] Wool-like fibers use chemical fibers to imitate the style characteristics of wool fabrics to produce chemical fiber fabrics, so as to achieve the purpose of replacing wool with chemical fibers. [0003] The natural crimp of wool is due to the double-sided structure of normal cortex and partial cortex cells in wool. In order to imitate the crimp characteristics of wool fiber, when spinning chemical fibers, two components with different shrinkage rates can be used to produce side-by-side composite fibers with different shrinkage components on the same fiber section, such as polyamide and Polyester, polyurethane polyether and polyacrylonitrile have self-curling side-by-side two-component composite fibers. The curl durability, bulkiness, resilience and warmth re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01D5/32D01D5/22
CPCD01F8/14D01D5/32D01D5/22
Inventor 范红卫王山水王丽丽汤方明
Owner JIANGSU HENGLI CHEM FIBER
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