Method for producing felt polyester staple fiber by recycling polyester bottle slice

A polyester staple fiber and linoleum based fabric technology, which is applied in fiber processing, single-component polyester rayon, melt spinning, etc., can solve the problems of recycled polyester bottle flakes with many impurities and inability to produce high-end chemical fiber products. Achieve the effect of being beneficial to environmental protection, improving cost performance and reducing production costs

Inactive Publication Date: 2009-07-22
NANJING VOCATIONAL UNIV OF IND TECH
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Problems solved by technology

[0003] In order to solve the above problems, the object of the present invention is to provide a method for producing linoleum base fabric polyester staple fiber by using recycled polyester bottle flakes, w...

Method used

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  • Method for producing felt polyester staple fiber by recycling polyester bottle slice

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Embodiment Construction

[0012] Referring to accompanying drawing 1, a kind of method of utilizing recycled polyester bottle flakes of the present invention to produce linoleum base cloth polyester staple fiber:

[0013] Firstly, the recycled waste PET bottle flakes are pretreated. Pretreatment includes a series of raw material preparations such as sorting, crushing, and cleaning the recovered polyester bottle flakes, and then undergoes high-temperature vacuum drying. The drying temperature is 130-160°C, the vacuum degree is 0.06-0.10Mpa, and the drying time is After 7 to 12 hours, the moisture content of the dried bottle flakes is ≤110PPm.

[0014] Then the high-temperature dried bottle flakes are melted through the screw extruder at high temperature, and a certain pressure is given at the same time. The ester melt enters the melt filter, the filter screen precision of the filter is 120-250 mesh, and the total filtering area of ​​the filter is 4.5-12m 2 , The filter temperature is controlled at 260...

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Abstract

The invention discloses a method for directly producing felt base cloth polyester short-fiber by recovered polyester bottle sheets, comprising the steps as follows: the recovered polyester bottle sheets are sorted, crushed, cleaned, dried, extruded in a melting state, filtrated, measured, spinned, cooled by circular wind, coiled and oiled, pulled, fed, dropped in a barrel, balanced, collected into bundles, primarily pulled by oil bath, secondarily pulled by steam, tensioned and thermally shaped, oiled, folded, curled, loosened and thermally shaped, cut off and finally packaged. Compared with the felt base cloth polyester short-fiber produced by taking the polyester new material as raw material, the felt base cloth polyester short-fiber produced by the method has almost the same performances and lower price, does not affect the production, processing and use of the next user product, still keeps all product performances of the next user product, lightens the harms of the wastes on the environment, and solves the environmental protection problem.

Description

technical field [0001] The invention relates to a method for producing polyester staple fibers for linoleum base cloth, in particular to a method for producing polyester staple fibers for linoleum base cloth by using recycled polyester bottle flakes. Background technique [0002] The series of bottles, films, utensils and other products made of bottle-grade polyester chips have many advantages such as high strength, good brightness, light weight, good transparency, easy processing, and stable size. Therefore, the global demand is increasing year by year. With the extensive use of products such as polyester bottles, since almost all polyester bottles are non-biodegradable, their waste has become a serious global environmental pollution problem. Vigorously develop polyester bottle recycling and reuse technology, how to better deal with and rationally reuse waste polyester bottles has become a key issue for the sustainable development of the polyester industry. Although people...

Claims

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Application Information

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IPC IPC(8): D01D1/00D01D1/04D01D1/10D01D5/08D01D5/092D01D5/096D02J1/22D02J13/00D01G1/04D06C7/02D01F6/62
Inventor 查安霞
Owner NANJING VOCATIONAL UNIV OF IND TECH
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