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Method for producing high-performance regenerated polyester colored special-shaped filaments on basis of waste polyester textile products

A technology of waste textiles and recycled polyester, applied in the field of textile and chemical fibers, can solve the problems of high energy consumption and secondary pollution, achieve efficient impurity removal, save dyeing steps, and achieve good product quality

Inactive Publication Date: 2018-08-14
ZHEJIANG HAILI ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high energy consumption and secondary pollution caused by waste removal, cleaning, drying, etc. in the recycling process of waste textiles, and to provide a high-performance regenerated polyester colored special-shaped filament based on waste polyester textiles method, and use physical and chemical methods to effectively regulate the properties of waste textile polyester in the molten state, make full use of dye auxiliaries in waste polyester textiles and online accurate full-chromatographic color matching and complementary color technology to prepare high-performance recycled polyester colored Shaped filaments to increase the added value of recycled products

Method used

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  • Method for producing high-performance regenerated polyester colored special-shaped filaments on basis of waste polyester textile products

Examples

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Embodiment 1

[0025] Such as figure 1As shown, the method for producing high-performance regenerated polyester colored special-shaped filaments based on waste polyester textiles in this embodiment includes the following steps: after removing impurities, sorting, crushing, etc., waste textiles are put into a vacuum drum, and the drum The temperature is 190°C, and it is dried for 6 hours. Then put the dried waste textiles into the screw, the length-to-diameter ratio of the screw is 25, and the temperatures of the first to seventh zones of the screw are 250°C, 265°C, 270°C, 275°C, 275°C, 274°C, 272°C respectively , The screw head pressure is 18Mpa. The regenerated polyester melt enters the vertical falling film reactor after primary filtration, and the temperature is 270°C. Ethylene glycol was added online in the front section of the falling film reactor, and the addition amount was 0.04%. After reacting for 30 minutes, it enters the squirrel-cage reactor after being filtered by a filter. T...

Embodiment 2

[0027] Such as figure 1 As shown, the method for producing high-performance regenerated polyester colored special-shaped filaments based on waste polyester textiles in this embodiment includes the following steps: after removing impurities, sorting, crushing, etc., waste textiles are put into a vacuum drum, and the drum The temperature is 200°C, and it is dried for 5 hours. Then put the dried waste textiles into the screw, the length-to-diameter ratio of the screw is 30, and the temperatures of the first to seventh zones of the screw are 255°C, 270°C, 273°C, 278°C, 278°C, 277°C, 275°C respectively , The screw head pressure is 16Mpa. The regenerated polyester melt enters the vertical falling film reactor after primary filtration, and the temperature is 275°C. Ethylene glycol was added online in the front section of the falling film reactor, and the addition amount was 0.08%. After reacting for 45 minutes, it is filtered through a filter and enters the squirrel-cage reactor. ...

Embodiment 3

[0029] Such as figure 1 As shown, the method for producing high-performance regenerated polyester colored special-shaped filaments based on waste polyester textiles in this embodiment includes the following steps: after removing impurities, sorting, crushing, etc., waste textiles are put into a vacuum drum, and the drum The temperature is 190°C, and it is dried for 6 hours. Then put the dried waste textiles into the screw, the length-to-diameter ratio of the screw is 25, and the temperatures of the first to seventh zones of the screw are 250°C, 265°C, 270°C, 275°C, 275°C, 274°C, 272°C respectively , The screw head pressure is 18Mpa. The regenerated polyester melt enters the vertical falling film reactor after primary filtration, and the temperature is 270°C. Ethylene glycol was added online in the front section of the falling film reactor, and the addition amount was 0.04%. After reacting for 30 minutes, it enters the squirrel-cage reactor after being filtered by a filter. ...

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Abstract

The invention relates to a method for producing high-performance regenerated polyester colored special-shaped filaments on the basis of waste polyester textile products. By the aid of the method, theproblems of high energy consumption and secondary pollution due to impurity removing, cleaning, drying and the like in existing waste textile product recycling procedures can be solved. The method includes steps of 1), pretreating the waste regenerated polyester textile products; 2), carrying out vacuum drying; 3), carrying out screw melting extrusion, micro-depolymerization, conditioning viscosity increasing, full-color-spectrum color matching and toning, spinning manifold treatment, circular air blowing cooling, bundling oiling and winding doffing on dried polyester textile products to obtain the high-performance regenerated polyester colored special-shaped filaments. The method has the advantages that the problems of high energy consumption and secondary pollution due to impurity removing, cleaning, drying and the like in the waste textile product recycling procedures can be solved by the aid of the method; the monofilament denier of fibers obtained by the aid of the method ranges from 1.0 dtex to 3.0 dtex; the yarn evenness of the fibers is lower than or equal to 2.2%; the breaking strength of the fibers is higher than or equal to 4.0 cN / dtex; the elongation at break ranges from 15% to 25%.

Description

technical field [0001] The invention relates to a method for producing high-performance recycled polyester colored special-shaped filaments based on waste polyester textiles, belonging to the field of textile chemical fibers. Background technique [0002] Since the first synthetic fiber (nylon 6 fiber) was artificially synthesized in the early 1940s, synthetic fiber has experienced a period of vigorous development worldwide due to its rich source of raw materials, large output and no time and geographical restrictions. . After years of development, my country has already become the world's largest country in the production and application of textile and chemical fibers. While the rapid development of textile chemical fibers and products has brought obvious improvements to people's lives, it has also produced disadvantages. For example, there are nearly 30 million tons of various textile wastes in my country every year, but these imitations are rarely recycled as renewable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D5/092D01D5/096F26B5/04
Inventor 陈浩朱华生蒋雪风徐通荣沈伟军
Owner ZHEJIANG HAILI ENVIRONMENTAL TECH CO LTD
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