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Preparation method of regenerative colored polyester fiber

A colored polyester and fiber technology is applied in the field of the preparation of recycled colored polyester fibers, which can solve the problems of poor fiber physical index and unstable color, and achieve the effects of low water absorption and moisture regain, full hand feeling and good heat resistance.

Inactive Publication Date: 2011-03-30
扬州天富龙集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, short fibers made of polyester foam on the market have unstable colors and poor fiber physical indicators, and can only be used for civilian products with low requirements.

Method used

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  • Preparation method of regenerative colored polyester fiber
  • Preparation method of regenerative colored polyester fiber

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preparation example Construction

[0016] In conjunction with accompanying drawing, a kind of preparation method of regenerated colored polyester fiber of the present invention comprises the following steps:

[0017] Step 1: Selection of raw and auxiliary materials, specifically: select raw materials with an intrinsic viscosity of 0.55-0.7dl / g containing less than 2 / 10,000 impurities, and the raw materials are waste polyester bottle flakes, waste polyester cloth corner foam or polyester waste silk A mixture of foam material and color masterbatch (commercially available); the mass ratio of the above raw materials is: 35-40% of waste polyester bottle flakes, 55-60% of waste polyester cloth corner foam material or polyester waste silk foam material, and 4% of color masterbatch ~5%;

[0018] Step 2: Dry the material, specifically: put the raw material into the drum and heat it with steam, the temperature of the steam heating is 158-162°C; then use a vacuum pump to remove the water, so that the water content of the ...

Embodiment 1

[0026] Embodiment 1: Select the raw material with an intrinsic viscosity of 0.55dl / g with an impurity content lower than 2 / 10,000, and the raw material is waste polyester bottle flakes, waste polyester cloth corner foam material or polyester waste silk foam material, color masterbatch Mixture: 39% of waste polyester bottle flakes, 56% of waste polyester corner foam or polyester waste silk foam, and 4.5% of color masterbatch. Put the raw material into the drum and heat it with steam, the temperature of the steam heating is 159°C; then use a vacuum pump for 7 hours to remove the water; the dried raw material is prepared through a screw extruder, a filter, and a spinning nozzle Raw filaments are formed; the model of the screw extruder is φ5, and the temperature in each area of ​​the screw extruder is 268-285°C during the working process; the temperature of the filter is 278-282°C, and the front pressure of the filter is 10 MPa. The back pressure is 5.5 MPa. Divide the above-ment...

Embodiment 2

[0027] Embodiment 2: Select the raw material with an intrinsic viscosity of 0.6dl / g with an impurity content lower than 2 / 10,000. The raw material is waste polyester bottle flakes, waste polyester cloth corner foam material or polyester waste silk foam material, and color masterbatch. Mixture: 37% of waste polyester bottle flakes, 58% of waste polyester corner foam or polyester waste silk foam, and 4% of masterbatch. Put the raw material into the drum and heat it with steam, the temperature of the steam heating is 160°C; then use a vacuum pump for 8 hours to remove the water; the dried raw material is prepared through a screw extruder, a filter, and a spinning nozzle Raw filaments are formed; the model of the screw extruder is φ5, and the temperature in each area of ​​the screw extruder is 268-285°C during the working process; the temperature of the filter is 278-282°C, and the front pressure of the filter is 11 MPa, The back pressure is 5 MPa. Divide the above-mentioned raw ...

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Abstract

The invention discloses a preparation method of regenerative colored polyester fiber, comprising the following steps of: selecting supplementary materials; drying the materials; carrying out spinning preparation and post-spinning extension; evenly extending by two traction rollers under a heating state; rolling the extended raw tows; drying and thermally forming the raw tows; and finally, cutting the dried tows according to customer demands to obtain the regenerative colored polyester fiber with needed lengths. Because the produced regenerative colored fiber is directly spun in the natural color, the traditional color difference is greatly reduced. The obtained product has even color, is colorfast and has high strength, good thermal stability, good elasticity, good wear resistance, low water absorption moisture regain, good acid and base resistance, bio-incising resistance, and the like.

Description

technical field [0001] The invention relates to a method for producing polyester fiber, in particular to a method for preparing regenerated colored polyester fiber. Background technique [0002] Regenerated colored polyester fibers are widely used in non-woven needle-punched carpets, automotive interior materials, floor mats, shoe materials, scouring pads, filter materials, artificial fur, clothing accessories and other industries. With the promulgation of the revitalization plan of the national automobile industry and textile and garment industry, the country pays more and more attention to the comprehensive recycling of renewable resources. The current regenerated colored polyester fibers are all kinds of recycled polyester products, such as polyester waste silk, polyester beverage bottles, polyester waste cloth, etc., which are re-granulated or fragmented after sorting and color separation. According to the requirement before spinning, mix colored dyes or pigments, maste...

Claims

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Application Information

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IPC IPC(8): D01D5/10D01D1/00D01D11/00D02G1/00D02J1/22D02J13/00D06C7/02
Inventor 朱大庆
Owner 扬州天富龙集团股份有限公司
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