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Method for manufacturing polyester staple fibers through recycled polyester bottles

A polyester staple fiber and recycled polyester technology, which is applied in the field of polyester staple fiber manufacturing, can solve problems such as low product quality reproducibility, insufficient color stability of finished products, and uneven product quality, so as to achieve good economic and social benefits, High reproducibility and high productivity effects

Inactive Publication Date: 2014-05-07
FUJIAN SANDA FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It includes the following steps: ① Cleaning, sorting, and vacuum drying of recycled polyester waste; ② Extrusion by melting screw extruder; ③ Primary filtration; ④ Metering pump metering and boosting; Silk; ⑦ silk collection barrel; the disadvantage is that the double-barrel switching filter is used for one use and one for standby, and the spare barrel is kept heated for a long time, and the surface and part of the residual melt in the pipeline will degrade and age. Fresh melt is flushed out, resulting in relatively high scrap costs
[0005] Chinese patent application CN101054732A discloses a kind of production method of reusing polyester bottle flakes to spin high-strength and low-elongation short fibers, but the waste spinning is stable because of its formula. Relatively poor performance, resulting in a certain color of the finished product is not stable enough, there is a small range of deviation, and the product quality is not uniform
However, when polyester sheets and bottle flakes are added to the silo for mixing, due to the unevenness of the mixture due to the difference in mass density and size, it is easy to cause certain melt pressure fluctuations when entering the screw for extrusion and melting, resulting in the recurrence of product quality. Sex is not high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Utilizing recycled polyester bottles to manufacture polyester staple fibers with specifications of 1.56dtex×38mm mainly includes the following steps:

[0033] 1) Sorting and sorting the purchased bottles of polyester components, and sorting out the bottles mainly for different colors and some non-polyester components such as miscellaneous bottles, sawdust, sand and stones before entering the machine. Bottles of different colors are stored separately, and used as raw materials for different primary color varieties; through the conveyor belt machine, they enter the labeling machine equipment for label removal and preliminary water cleaning, and then enter the crusher table through the conveyor belt device to be crushed into upper-machine materials and molding materials. After the size of the sheet is square and about 14mm×14mm, it will be cleaned later.

[0034] 2) The broken bottle flakes enter the grinding machine with water spray through the feeder equipment for fricti...

Embodiment 2

[0039] Utilizing recycled polyester bottles to manufacture polyester staple fibers with specifications of 2.22dtex×51mm mainly includes the following steps:

[0040] 1) Sorting and sorting the purchased bottles of polyester components, and sorting out the bottles mainly for different colors and some non-polyester components such as miscellaneous bottles, sawdust, sand and stones before entering the machine. Bottles of different colors are stored separately, and used as raw materials for different primary color varieties; through the conveyor belt machine, they enter the labeling machine equipment for label removal and preliminary water cleaning, and then enter the crusher table through the conveyor belt device to be crushed into upper-machine materials and molding materials. After the size of the sheet is square and about 14mm×14mm, it will be cleaned later.

[0041] 2) The broken bottle flakes enter the grinding machine with water spray through the feeder equipment for fricti...

Embodiment 3

[0046] Utilizing the recycled polyester bottle to manufacture polyester staple fiber with a specification of 2.78dtex×51mm mainly includes the following steps:

[0047] 1) Sorting and sorting the purchased bottles of polyester components, and sorting out the bottles mainly for different colors and some non-polyester components such as miscellaneous bottles, sawdust, sand and stones before entering the machine. Bottles of different colors are stored separately, and used as raw materials for different primary color varieties; through the conveyor belt machine, they enter the labeling machine equipment for label removal and preliminary water cleaning, and then enter the crusher table through the conveyor belt device to be crushed into upper-machine materials and molding materials. After the size of the sheet is square and about 14mm×14mm, it will be cleaned later.

[0048] 2) The broken bottle flakes enter the grinding machine with water spray through the feeder equipment for fri...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a method for manufacturing polyester staple fibers through recycled polyester bottles. The method comprises the following steps of: recycling waste polyester bottles, and performing crushing, cleaning, burdening, melt-extruding, spinning-extruding, drawing, drying, sizing and cutting on the recycled polyester bottles to obtain the polyester staple fibers. The production method disclosed by the invention not only saves natural resources, but also alleviates white pollution and protects the environment, thereby having good economic and social benefits, and the proportions of the raw materials can be adjusted to obtain products with given specifications. The product is a superior product according to the product grade of the textile raw material product standard of China, and is capable of replacing staple fibers produced by conventional production methods.

Description

technical field [0001] The invention relates to the field of synthetic fibers, in particular to a method for producing polyester staple fibers from recycled polyester bottles. Background technique [0002] Polyester staple fiber is a fiber obtained by spinning polyester into tow and cutting it. The products are mainly used in the cotton spinning industry, spinning alone or blended with cotton, viscose fiber, hemp, wool, vinylon, etc. The obtained yarn is mainly used for clothing weaving, and can also be used for home decoration fabrics, packaging fabrics, filling materials and Insulation material. The strength of polyester fiber is nearly 1 times stronger than cotton and 3 times stronger than wool, so polyester fabric is strong and durable. It can be used at 70-170°C, and it has the best heat resistance and thermal stability among synthetic fibers. The elasticity of polyester is close to that of wool, and its wrinkle resistance exceeds that of other fibers. The fabric doe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10D01D1/04D01D5/08D01D5/12D02G1/00D02J13/00
Inventor 张华良张希文
Owner FUJIAN SANDA FIBER
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