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Process for producing polyester spunbonded pre-oriented yarn from waste polyester bottle chips

A technology of pre-oriented yarn and production process, applied in the field of polyester filament manufacturing, can solve the problems of high spinning cost and large waste of petroleum resources, and achieve the effects of saving materials, eliminating bridging, and improving the humidity of air-conditioning side air.

Inactive Publication Date: 2009-10-07
绍兴柯桥南红纱业有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

The raw materials used in these two kinds of spinning are intermediate products of petroleum resources, which cause a large waste of petroleum resources and high spinning costs.

Method used

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  • Process for producing polyester spunbonded pre-oriented yarn from waste polyester bottle chips

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Embodiment Construction

[0024] The production process of polyester pre-oriented yarn spun from waste polyester bottle flakes, combined with figure 1 shown. Using waste PET bottles as raw materials, PET bottle flakes are obtained by sorting, crushing, and cleaning, and the bottle flakes are crystallized and dried. The crystallization temperature is 165°C, and the fan frequency is 40-50Hz. In the drying step, the drying temperature is controlled at 150°C, and the drying air pressure is 1.5Kg / Cm 2 , the drying time is 300min, and the moisture content of the bottle flakes can reach ≤30ppm. Due to the characteristics of low melting point and high viscosity of the waste bottle flakes, continuous crystallization and drying under high temperature conditions are likely to cause bottle flake accumulation, adhesion, uneven feeding speed, etc., resulting in the failure of continuous crystallization and drying of bottle flakes. In view of these bad characteristics of waste bottle flakes, by increasing the area ...

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Abstract

The invention relates to a process for producing polyester spunbonded pre-oriented yarn from waste polyester bottle chips, belongs to the polyester filament manufacturing technology field. The invention adopts waste PET bottle as material, comprises the following steps: crystallizing the processed bottle chips, drying to the water content no more than 30ppm; mounting miniature shock pneumatic hammer on the pipeline outer wall to realize slight shock form for conveying the dried bottle chips to a screw extruder; controlling the temperatures of the areas of the screw extruder at 288-308 degrees centigrade; removing the impurities in he melt by a double stage filter and a booster pump; metering and distributing the melt by a metering pump, extruding to spinning jet board assembly; cooling, stretching, oiling, winding into cylinder and cartonning. The invention reduces resource waste and environmental pollution, achieves characteristics of continuous production and high production efficiency; can obtain product with high strength, uniform color, stable quality and low cost; improve the class of the waste polyester bottle chips produced textile product; and improves market competition ability of the product.

Description

technical field [0001] The invention relates to a production process for spinning polyester pre-oriented yarns from waste polyester bottle flakes, and belongs to the technical field of polyester filament manufacturing. Background technique [0002] As an important fiber raw material, chemical fiber has accounted for more than 60% of the total fiber processing in my country, and it occupies and will continue to occupy an important position in human life. As we all know, most of the chemical fiber raw materials come from petroleum and petroleum derivatives, and petroleum is a non-renewable resource. As a country whose per capita resources are far below the world average and is entering into rapid industrialization, facing the increasingly scarce and high-priced oil resources, how to reduce the dependence on oil resources has become a very prominent practical problem. At the same time, the polyester industry has always been the focus of the development of my country's chemical...

Claims

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Application Information

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IPC IPC(8): D01D1/00D01D1/04D01D1/09D01D1/10D01D5/08
Inventor 李友祥
Owner 绍兴柯桥南红纱业有限公司
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