Method for producing special fibers of large bright sewing thread from polyester bottle waste material

A technology for light sewing thread and polyester bottle, which is applied in the field of producing special fibers for bright light sewing threads, can solve the problems of inability to produce special fibers for ultra-fine denier, improve spinning performance and drafting performance, reduce moisture regain, increase The effect of stretch magnification

Active Publication Date: 2012-10-17
广东源辉环保纤维有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of 1.33dtex*38mm high-strength low-strength fiber that can be produced from polyester bottle waste to solve the technical problem that the existing us

Method used

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Embodiment Construction

[0012] A method for producing special fibers for 1.33dtex high-gloss sewing thread from polyester bottle waste, the process steps include: high-temperature cleaning of waste polyester shreds, pre-drying, vacuum drum drying, screw melt extrusion, filtration, metering pump Spinning, ring blowing cooling, winding and oiling, pulling and falling into barrels, clustering, water bath drawing, steam drawing, tension heat setting, oiling and stacking, crimping, loose setting, cooling, cutting, packing. This method is to make the following improvements and adjustments in the conventional process of polyester regenerated polyester staple fiber:

[0013] 1. In the selection of raw materials, in order to ensure the normal spinning and the gloss and color of the finished fiber, pure white sheets cleaned at high temperature are selected.

[0014] 2. After vacuum drum drying, the moisture content of the material is controlled below 80ppm.

[0015] 3. Add 50 g / ton of OB-1 whitening agent, 10...

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Abstract

The present invention relates to a method for producing special fibers of large bright sewing thread from a polyester bottle waste material. The method of the present invention is the improvement of the chopped fiber regeneration process in the prior art. The method comprises: carrying out a vacuum drum drying treatment, wherein the water content in the material is less than 80 ppm; adding additives of an OB-1 brightening agent, barium sulfate and zinc stearate to the material according to a certain ratio, wherein per ton of the material is added with 25-50 g of the OB-1 brightening agent, 500-2000 g of the barium sulfate, and 50-200 g of the zinc stearate; uniformly mixing the material and the additives, and carrying out melting extruding with a screw extruder. According to the method, fiber whiteness can be increased with the OB-1 brightening agent; a slipping coefficient of crushed sheets can be increased with the zinc stearate, such that uniform material feeding of the screw extruder can be ensured so as to reduce reflux degradation of the melt, and uniform material conveying in the dry bin can be provided so as to reduce moisture regaining due to long time staying; the spinning performance and the drafting performance can be improved with the barium sulfate; and the additives are added to the material, and the production process is appropriately adjusted, such that the produced product can meet requirements of the special fibers of the large bright sewing thread.

Description

technical field [0001] The invention relates to a method for producing special fiber for bright sewing thread from polyester bottle waste, in particular to a method for producing special fiber for 1.33dtex bright sewing thread from polyester bottle waste. Background technique [0002] Currently, waste polyester (PET) bottle crushed flakes are used to produce recycled polyester staple fiber, which is used in the textile field. The most high-end products are limited to 1.56dtex*38mm high-strength and low-stretch cotton imitation Dahua products, and special staple fibers for Dayouguang sewing thread are also available. There is no report, and this content is not included in the national industry standard. Contents of the invention [0003] The purpose of the present invention is to provide a kind of 1.33dtex*38mm high-strength low-strength fiber that can be produced from polyester bottle waste to solve the technical problem that the existing use of polyester bottle waste is l...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10C08J11/06D01D5/08D01D7/00D02J1/22
CPCY02W30/62
Inventor 周立
Owner 广东源辉环保纤维有限公司
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