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Large-diameter PP-PET (polypropylene-polyethylene terephthalate) sheath-core composite monofilament and production method thereof

A composite monofilament, production method technology, applied in the direction of conjugated synthetic polymer artificial filament, stretch spinning, filament/thread forming, etc., can solve the defects of strength, elongation at break, affecting work performance and application range and other problems, to achieve the effect of wide application range, high uniformity and convenient operation

Active Publication Date: 2014-04-23
NANTONG NTEC MONOFILAMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing monofilaments have defects in strength, elongation at break and other properties, which affect the working performance and application range

Method used

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  • Large-diameter PP-PET (polypropylene-polyethylene terephthalate) sheath-core composite monofilament and production method thereof

Examples

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Effect test

Embodiment Construction

[0010] A large-diameter PP-PET sheath-core composite monofilament, the polymer is polypropylene, polyethylene terephthalate blended polyester, and the mass ratio of polypropylene to polyethylene terephthalate 20:80~60:40, polypropylene as the skin layer, polyethylene terephthalate as the core layer, the diameter of the monofilament is 0.2~1mm, the strength of the monofilament is ≥3.5CN / dtex, and the elongation at break is 15 ~25%.

[0011] The production method of the described large-diameter PP-PET sheath-core type composite monofilament comprises the steps of composite spinning, cooling, stretching, and heat setting. The cooling adopts a liquid cooling method, and the polymer ejected from the spinneret assembly 1 is The melt directly enters the liquid tank 2 for liquid cooling and molding, and is transported out of the liquid tank through the front and rear winding rollers 3 and 4 in the liquid tank to enter the subsequent process; the front and rear winding rollers are loca...

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Abstract

The invention discloses a large-diameter PP-PET (polypropylene-polyethylene terephthalate) sheath-core composite monofilament and a production method thereof. The monofilament is characterized in that the polymer is PP and PET blended polyester; the mass ratio of PP to PET is (20:80) to (60:40); the diameter of the monofilament is 0.2-1mm; the strength of the monofilament is not less than 3.5CN / dtex; and the elongation at break is 15-25%. The production method comprises the steps of melt extrusion, cooling, drawing and heat setting, wherein a liquid cooling method is adopted in the step of cooling. The production method is simple in process and is convenient to operate; and the formed fibers have the characteristics of high tenacity, high roundness, high uniformity and the like and have wide range of application.

Description

technical field [0001] The invention relates to a large-diameter PP-PET sheath-core composite monofilament and a production method thereof. Background technique [0002] The existing monofilaments have defects in properties such as strength and elongation at break, which affect the working performance and application range. Contents of the invention [0003] The object of the present invention is to provide a large-diameter PP-PET sheath-core composite monofilament with good working performance and a production method thereof. [0004] Technical solution of the present invention is: [0005] A large-diameter PP-PET sheath-core composite monofilament is characterized in that: the polymer is polypropylene, polyethylene terephthalate blended polyester, and polypropylene and polyethylene terephthalate The mass ratio of ester is 20:80~60:40, polypropylene is the skin layer, polyethylene terephthalate is the core layer, the diameter of the monofilament is 0.2~1mm, the strength...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/06D01F8/14D01D5/088D01D5/14D01D5/34
Inventor 马海燕
Owner NANTONG NTEC MONOFILAMENT TECH CO LTD