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Method for producing high-intensity fine denier fiber from scrap material and returned material of polyester bottles

A fine-denier fiber and polyester bottle technology, which is applied in the field of synthetic fiber production, can solve problems such as the inability to produce fine-denier fiber, and achieve the effects of long residence time, reduced slip coefficient, and good dyeing performance

Active Publication Date: 2011-08-10
广东秋盛资源股份有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method that can produce high-strength fibers from polyester bottle waste and recycled materials for the existing technical problems that the use of waste mineral water bottle chips (waste materials and recycled materials) is limited to some low-end products and cannot produce fine denier fibers. The method of fine denier fiber saves national resources and improves economic and social benefits

Method used

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  • Method for producing high-intensity fine denier fiber from scrap material and returned material of polyester bottles
  • Method for producing high-intensity fine denier fiber from scrap material and returned material of polyester bottles

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Embodiment Construction

[0010] A method for producing high-strength fine denier fibers from polyester bottle waste and recycled materials. The process includes: pre-treatment of waste polyester bottle flakes, primary drying, secondary drying, high-temperature melting and stirring extrusion of a screw, primary filtration, and secondary drying. Stage filtration, pressurized metering and spinning, ring blowing cooling, winding oiling, pulling and falling into barrels, stable storage, clustering, low temperature softening, primary drafting, secondary oil bath drafting, steam drafting, tension heat setting, upper Oiling, lamination, crimping, multi-layer relaxation heat setting, cooling stabilization, cutting and packaging of finished products, this embodiment is to make the following improvements and adjustments in the above-mentioned conventional process: 1. After the secondary drying treatment, the material Control the water content below 80ppm, and then add chemical additives to the material: add 0.02-...

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Abstract

The invention relates to a method for producing high-intensity fine denier fiber from a scrap material and a returned material of polyester bottles. The method is characterized by comprising the following steps of: after the material is dried for the second time and the water content of the material is controlled below 80 ppm, adding the following chemical additives in percentage by mass: 0.02 to0.04 percent of OB-1 brightening agent, 0.02 to 0.04 percent of barium stearate and 0.04 to 0.06 percent of titanium white into the material, uniformly stirring the mixture, and fusing and stirring the mixture in a screw rod at a high temperature and extruding the mixture; arranging a mixing region at the tail end of a screw extruder, wherein the length of the mixing region H is 3 to 4 times the sleeve diameter D of the screw extruder; and raising the temperature of a heating region of a screw rod sleeve from conventionally 260-310 DEG C to 285-340 DEG C. A product produced by the method belongs to high-intensity fine denier fiber; the linear density of the fiber is less than or equal to 1.55 dtex and the breaking strength of the fiber is CN / dtex is more than or equal to 5.8; and the quality of the product reaches or is close to the quality standard of similar chopped fiber produced by melt direct spinning. The method has the advantages of reliving the situation of material shortage for users, saving the consumption of national resource consumptions, fulfilling the aim of mutual benefits and bringing considerable economic benefit to enterprises.

Description

technical field [0001] The invention belongs to the technical field of synthetic fiber production, and in particular relates to a method for producing high-strength fine denier fibers from polyester bottle waste and recycled materials. Background technique [0002] Currently, waste mineral water bottle flakes PET is used to produce polyester staple fiber, which is only limited to some low-end products in the textile field. At present, waste mineral water bottle flakes (waste and recycled materials) are used to produce and process fine denier fibers, which are specially used for spinning materials. Alternatives to melt DC-spun fine denier fibers have not been reported. Contents of the invention [0003] The purpose of the present invention is to provide a method that can produce high-strength fibers from polyester bottle waste and recycled materials for the existing technical problems that the use of waste mineral water bottle chips (waste materials and recycled materials) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92C08J11/06
CPCY02W30/62
Inventor 马义忠马秋镇付文虎张开友
Owner 广东秋盛资源股份有限公司
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