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Preparation method for fine denier polyester industrial yarn

A manufacturing method and technology of fine denier polyester, applied in melt spinning, filament forming treatment, textile and paper making, etc., to achieve stable quality, low production cost and wide application range

Inactive Publication Date: 2008-10-01
CHANGSHU FEITENG CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is: to overcome the many shortcomings and unfavorable factors in the above several technical methods for producing polyester sewing thread, and to provide a low-cost, high-yield, simple process, easy-to-control production and reasonable application. Method for producing polyester sewing thread with existing equipment resources (FDY)

Method used

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  • Preparation method for fine denier polyester industrial yarn

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Embodiment Construction

[0016] The following is a specific embodiment of the present invention: producing polyester sewing thread 150D / 36f (big bright)

[0017] The production process is as follows: polyester high-viscosity chip (Dayouguang) intrinsic viscosity IV=0.75dl / g. The slices are pre-crystallized at 175°C for about 20 minutes, and sent to a drying tower for 6-8 hours at a drying temperature of 165°C. Ensure that the moisture content of the slices is less than 30ppm, and control the viscosity down to 2%. The dried chips are melted, mixed, metered, and filtered into the spinning box for spinning through a screw extruder. The melt passes through a circular spinneret hole (0.32mm in the hole diameter) and a 36-hole circular spinneret. , after cooling by side blowing, oiling, drawing, and winding to obtain polyester sewing thread, and then go through hosiery knitting, color judgment, external inspection, and grading packaging.

[0018] Process parameter in the above-mentioned procedure is:

[...

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Abstract

The invention provides a dawn terylene industry silk production method, including slice conveying, pre-crystallization, drying, screw rod squeezing, metering, filtering, spinning, bundling and oil applying, drafting, coiling, exterior checking, dyeing, and packaging, which is characterized in that a two stage stretching is adopted, a four stage of stretching step for producing the industry silk, the existing FDY production facility are used. Thereby the invention has small equipment increased investment, high added value products, few equipment investment, ripe technology, not quite difficult manufacturing management, strong producing stability and considerable products profit; the invention can produce high performance sewing thread in the same technological condition.

Description

technical field [0001] The invention belongs to the field of chemical fiber production methods, in particular to a production process for polyester filaments, in particular to a production and preparation method for fine-denier polyester industrial yarns. Background technique [0002] Polyester filament sewing thread is a fine denier industrial yarn, which is widely used in the fields of medium and high-end clothing, leather products, medical surgery and military supplies due to its high strength, good wear resistance, corrosion resistance and mildew resistance, and no joints. [0003] Specifications of polyester filament sewing thread: high strength (≥6.5cn / dtex), low shrinkage (≤14%), high toughness, low heat shrinkage ≤3%. [0004] At present, the following three technical approaches are used to trial-produce filament sewing threads at home and abroad: [0005] ① Spinning and pulling one-step process. The raw material of this method is high-viscosity polyester chips, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D1/00D01D1/10D01F6/62
Inventor 李允辉
Owner CHANGSHU FEITENG CHEM FIBER
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