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Method for processing recycled polyester staple fibers from waste polyester textiles

A technology for recycling polyester and textiles, applied in textiles and papermaking, melt spinning, stretch spinning, etc., can solve the problems of affecting spinning production, low intrinsic viscosity, etc., achieve stable internal quality, improve purity and viscosity, The effect of reducing production costs

Active Publication Date: 2015-08-26
余姚大发化纤有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

However, due to the existence of dyes in the raw materials of waste textiles and the severe thermal degradation caused by the granulation process, the intrinsic viscosity of the granules is low, and the viscosity of the general granules is below 0.6, and the existence of impurities seriously affects the production of spinning

Method used

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Embodiment Construction

[0027] A detailed description will be given below of specific embodiments of the present invention.

[0028] A method for processing recycled polyester staple fibers from waste polyester textiles, the method comprising the following steps:

[0029] 1. Pretreatment of friction materials made of recycled waste polyester textiles:

[0030] The friction material made of recycled waste polyester textiles is matched, proportioned and dried. The color matching is to ensure the color stability of the produced batch of fibers according to the color and quantity of different friction materials to ensure the color of the batch of products. stability;

[0031] The above ratio is to ensure the spinnability and color stability of the fiber during the production process. According to the difference in the intrinsic viscosity of different friction materials and the difference in the color of the friction materials, the relative stability of the melt viscosity can be achieved through reasonab...

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Abstract

The invention relates to a method for producing regenerated polyester staple fibers, in particular to a method for processing regenerated polyester staple fibers through a physical method by using waste polyester textiles. The method for processing regenerated polyester staple fibers by using waste polyester textiles comprises the following steps of: conducting color matching, proportioning and drying to friction materials produced by using the recovered waste polyester textiles; squeezing and fusing the dried friction materials to obtain fusant; primarily filtering the fusant, feeding the fusant into a high-vacuum tempering and viscosity-regulating reaction kettle; filtering the fusant, feeding the fusant into a spinning manifold and metering spinning; and after spun nascent fibers are bundled, conducting oiling through a dipping tank and a drawing tank, steam secondary drawing, overlapping, curling, relaxed heat setting, cutting and packing to obtain the regenerated polyester staple fibers. By adopting the method for processing regenerated polyester staple fiber by using waste polyester textiles, the technical problem of producing high-quality regenerated polyester staple fibers by using the recovered textiles is solved, the cost of raw materials for producing the regenerated polyester staple fibers is decreased and the problem of recovering the waste polyester textiles is solved.

Description

technical field [0001] The invention relates to a method for producing regenerated polyester staple fiber, in particular to a method for processing regenerated polyester staple fiber by utilizing waste polyester textile physical method. Background technique [0002] China is a big producer of textiles and garments, as well as a big consumer of textiles and garments. At present, a large amount of textile waste - leftovers from the production process, waste cloth, used clothes, discarded home decoration fabrics, etc. are mostly disposed of by incineration or burial, which not only causes waste of resources, but also brings environmental pollution. Therefore, the present invention's research on how to recycle and recycle these waste textiles is not only the responsibility of those engaged in the utilization of renewable resources, but also the strategic requirement of my country's sustainable development. "Supporting the recycling of waste textiles" was written into the "Twel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/08D01D1/00D01D1/04D01D1/10D01D5/092D01D5/14
Inventor 钱军邢喜全王方河贾同伟杜芳
Owner 余姚大发化纤有限公司
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