Technique for producing medium strong polyester filament yarn by melt direct spinning

A technology of melt direct spinning and polyester filament, applied in the field of chemical fiber, can solve problems such as no formal reports, papers or patents, and achieve the effects of low product cost, high strength and good evenness.

Inactive Publication Date: 2008-06-25
SHENGHONG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the search, there is no specific domestic practice of producing medium-strength polyester FDY filaments by melt direct spinning, and no official reports, papers or patents have appeared.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The following is an implementation example of producing 50D / 36F fine-denier medium-strength FDY filaments in the first phase A area of ​​Jiangsu Shenghong Chemical Fiber Co., Ltd.

[0013] The spinning and winding equipment are all provided by Barmag Company of Germany, and the polymerization adopts the three-reactor process flow of DuPont in the United States. The specific process is shown in the table below:

[0014] Production line / bit

[0015] preservatives

[0016] After the product is tested by the testing center of Jiangsu Shenghong Chemical Fiber Co., Ltd. for various physical indicators, the performance can meet the set requirements. The specific physical indicators are as follows:

[0017] project

[0018] Special Note: The Fiber Testing Center of Jiangsu Shenghong Chemical Fiber Co., Ltd. is a testing unit with the logo of the National Certification and Accreditation Committee. Its test report has greater authority and can be ...

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Abstract

The invention aims to provide a processing technology for utilizing a melt direct spinning production mode to produce medium strength polyester fiber filaments (FDY). Technical routes adopted by the invention are the same with conventional varieties, but first hot-roller temperature and second hot-roller temperature which are higher than universal-energy domestic filaments and higher drafting multiple are adopted, and simultaneously winding devices are improved in a certain degree, thereby the medium strength polyester fiber FDY filaments meeting requirements can be produced on the premise that large equipment investment is not increased. The FDY filaments have the characteristics of high strength and low elongation at break. The invention is mainly applied in the polyester fiber sewing thread and paper package rib reinforcement weaving field.

Description

technical field [0001] The invention relates to a processing technology of polyester filament, which belongs to the technical field of chemical fiber. Background technique [0002] Generally, polyester filaments can be produced in two ways: chip spinning and melt spinning. For the melt spinning method, due to the characteristics of continuous and large capacity, it is widely used in the field of civilian yarn. However, in the polymerization stage, the various characteristics of the melt are basically finalized, including strict restrictions on viscosity, moisture, DEG content and chromaticity. Therefore, the physical and chemical properties of FDY or POY products produced by direct spinning of the melt Performance has little room for change. [0003] At present, in order to meet the requirements of fineness 50-300D, breaking strength ≥ 6.0g / d and elongation at break of 12±2% when processing polyester medium-strength yarn (FDY) under the mode of one-step production, it can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D5/088D01D5/096D01D11/00D01F6/62D02J1/22
Inventor 辛婷芬
Owner SHENGHONG GRP CO LTD
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