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Method for producing terylene pre-tropism continuous yarn by utilizing reclaimed polyester bottle

A recycled polyester and pre-orientation technology, which is applied in the field of fiber production, can solve the problems of low drying efficiency, poor uniformity, and high cost of production raw materials, and achieve the effects of fast drying speed, fast filament forming, and simple and easy production methods

Active Publication Date: 2008-03-19
浙江聚元新材料股份有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly solves the technical problems of high production raw material cost, low drying efficiency and poor uniformity existing in the prior art, and provides a kind of low raw material cost, high drying efficiency and good uniformity to produce polyester prepreg by using recycled polyester bottles. Method of Orienting Filaments

Method used

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Experimental program
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Embodiment 1

[0025] The first step is to sort the recycled polyester bottles. The classification is carried out according to the type of the original filling of the polyester bottle, and the polyester bottle is divided into two types: oily polluted polyester bottle and water polluted polyester bottle.

[0026] In the second step, the sorted polyester bottles are crushed and cleaned according to the classification to obtain neat polyester bottle flakes. The two types of polyester bottles separated in the first step are cleaned separately. Because of the difference in pollutants, different cleaning agents are used, and the cleaning process is the same. The washed polyester bottle is put into a pulverizer to pulverize, and the pulverized polyester bottle flakes are flake solids of different sizes, with side lengths ranging from 5 mm to 15 mm and an average diameter of 12 mm.

[0027] In the third step, the bottle flakes are subjected to continuous crystallization and drying. The bottle flak...

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Abstract

The present invention belongs to the fiber producing method field, in particular relates to a method which uses a reclaimed PET bottle to produce the terylene preoriented filament in particular. The present invention mainly solves the problems of the prior art that the cost of raw materials for production is high, the drying efficiency is low, and the uniformity is poor, etc., and provides a method which uses the reclaimed PET bottle to produce the terylene preoriented filament with low cost of the raw materials for production, high drying efficiency, and good uniformity. The present invention has the major steps that the bottle piece of the PET bottle is produced; the bottle piece is continuously crystallized and dried by passing through a pre-crystallizer and a drying tower; the dried bottle piece directly enters a threaded rod extrusion machine, and is melted and extruded by a spinning threaded rod; the molten polyester material is continuously filtrated by a molten mass filter with a big filtering area of one level or two levels, to enter a spinning manifold; a thread line is cooled by passing through a cross air blasting, to wind to form the preoriented filament.

Description

technical field [0001] The present invention belongs to the field of fiber production methods. In particular, it relates to a method for producing polyester pre-oriented filaments by using recycled polyester bottles. Background technique [0002] As one of the main varieties of synthetic fibers, polyester is widely used in clothing fabrics and other non-clothing fields, but because its raw materials come from petroleum, the price is high and resources are tight. The invention utilizes polyester bottle flakes obtained through crushing and cleaning of recovered polyester bottles, and adopts continuous drying, melting and double-stage filtration to produce polyester pre-oriented filaments (POY). In the past, there was a production method for producing polyester staple fibers from polyester bottle flakes obtained by recycling polyester bottles through pulverization and cleaning, but there was no method for continuously drying recycled polyester bottles to produce polyester pre-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/02D01D1/10D01D5/08
Inventor 梁景富刘维国刘俊
Owner 浙江聚元新材料股份有限公司
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