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Preparation method for regenerate polyester staple fiber

A technology of recycled polyester and short fibers, which is applied in the direction of melt spinning and non-bundle formation, which can solve the problems of high strength and low stretchability, inability to effectively control the three-dimensional lamination thermoformability of products, and high product scrap rate. Achieve the effects of reducing dry heat shrinkage, improving thermoformability, and increasing elongation at break

Inactive Publication Date: 2015-04-29
CHANGSHU GOLD SPRING CHEM FIBERS & KNITTINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most polyester staple fiber products on the market are high-strength and low-elasticity products
The three-dimensional lamination thermoformability of the product cannot be effectively controlled in the subsequent processing, and the scrap rate of the product is 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

[0013] Embodiment one: a kind of preparation method of regenerated polyester staple fiber, its steps are:

[0014] (1) Dry the PET slices, adopt the method of drum heating and vacuuming, keep the temperature of the PET slices at 155°C, and keep the vacuum degree of 0.1MPa to saturate and dry for 11 hours;

[0015] (2) PET chip spinning, the PET chip processed in step (1) is sent into the spinning machine, the temperature of the spinning screw, filter and spinning box body of the spinning machine is set to 275 ° C, and the spinning speed is 950 meters per minute, the spun silk passes through the ring blowing device, the wind speed of the ring blowing is 0.5 m / s, and the temperature of the ring blowing air is 26°C;

[0016] (3) The silk spun out of step (2) first passes through the compound oil agent with a temperature of 75 degrees and a concentration of 4%, and then enters one drafting roller, two drafting rollers and three drafting rollers successively, and one drafting rolle...

Embodiment 2

[0019] Embodiment two: a kind of preparation method of regenerated polyester staple fiber, its steps are:

[0020] (1) Dry the PET slices, adopt the method of drum heating and vacuuming, keep the temperature of the PET slices at 150°C, and keep the vacuum degree of 0.1MPa to saturate and dry for 10 hours;

[0021] (2) PET chip spinning, the PET chip processed in step (1) is sent into the spinning machine, the temperature of the spinning screw, filter and spinning box of the spinning machine is set to 260 ° C, and the spinning speed is 800 meters per minute, the spun silk passes through the ring blowing device, the wind speed of the ring blowing is 0.4 m / s, and the temperature of the ring blowing air is 22°C;

[0022] (3) The silk spun out of step (2) first passes through the compound oil agent with a temperature of 75 degrees and a concentration of 3, and then enters one drafting roller, two drafting rollers and three drafting rollers successively, and one drafting roller The...

Embodiment 3

[0025] Embodiment three: a kind of preparation method of regenerated polyester staple fiber, its step is:

[0026] (1) Dry the PET slices, adopt the method of drum heating and vacuuming, keep the temperature of the PET slices at 165°C, and keep the vacuum degree of 0.11MPa to saturate and dry for 12 hours;

[0027] (2) PET chip spinning, the PET chip processed in step (1) is sent into the spinning machine, the temperature of the spinning screw, filter and spinning box of the spinning machine is set to 285 ° C, and the spinning speed is 1200 meters per minute, the spun silk passes through the ring blowing device, the wind speed of the ring blowing is 0.6 m / s, and the temperature of the ring blowing air is 28°C;

[0028] (3) The silk spun out of step (2) first passes through the compound oil agent with a temperature of 75 degrees and a concentration of 5%, and then enters one drafting roller, two drafting rollers and three drafting rollers successively, and one drafting roller ...

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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PUM

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Abstract

The invention relates to a preparation method for regenerate polyester staple fiber. The method improves elongation at break of the polyester staple fiber, and reduces shrinkage in hot air through control of technological conditions of temperature, time, and the like in a processing and preparation process, and improves dimensional pressed film thermal forming performance of the product (namely the regenerate polyester staple fiber).

Description

technical field [0001] The invention relates to a preparation method of recycled polyester staple fiber. Background technique [0002] Polyester staple fiber is a fiber obtained by spinning polyester (that is, polyethylene terephthalate, PET for short) into tow and cutting it. PET is in the shape of rice grains or flakes. Usually, the main component of beverage bottles we come into contact with is polyester. After cutting it into slices, polyester staple fibers can be produced through two main processes of pre-spinning and post-spinning. According to different It can be cut into polyester staple fibers of different specifications in post-spinning, generally 4D-22D, and can be divided into two-dimensional and three-dimensional according to the crimp. [0003] Polyester staple fiber products are mainly used in 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...

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 Applications(China)
IPC IPC(8): D01D5/08D01D5/088D01D5/096D01G1/04
CPCD01D5/08D01D5/088D01D5/096D01G1/04
Inventor 樊海彬
Owner CHANGSHU GOLD SPRING CHEM FIBERS & KNITTINGS
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