Production method of polypropylene bonding reinforced polyester industrial yarn
A production method and enhanced technology, applied in the field of polyester industrial fibers, can solve the problems of poor adhesion between polyester fibers and polypropylene materials, difficulties in the application of polyester fibers, etc., and achieve the effect of improving adhesion
Inactive Publication Date: 2014-09-10
ZHEJIANG UNIFULL IND FIBER
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AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to provide a kind of production method with polypropylene bonding reinforced polyester industrial filament, to overcome the poor adhesion of polyester fiber and polypropylene material and the polyester fiber in the polyester fiber that exist in the prior art. Deficiencies such as difficulties in the application of acrylic materials
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0016] Embodiments of the present invention: adhesion-enhanced polyester industrial filaments with polypropylene, including a whole bundle of filaments with a diameter of 2000-3000 microns coated with an adhesion-enhancing auxiliary agent with a thickness of 15-20 microns, wherein The whole bundle of filaments is composed of 192-384 polyester monofilaments with a diameter of 80-120 micrometers, and the surface of each polyester monofilament is coated with an inner layer of adhesion-enhancing additive with a thickness of 10-15 micrometers.
[0017] Bonding reinforced polyester industrial filaments of the present invention with polypropylene can be prepared by the following process steps:
[0018] Chip spinning process:
[0019] A. Solid state polymerization: under the protection of inert gas nitrogen, low-viscosity spinning grade polyester chips are first crystallized at 150-170 degrees Celsius, and then raised to 200-225 degrees Celsius for polycondensation reaction to obtain ...
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Abstract
The invention discloses a production method of a polypropylene bonding reinforced polyester industrial yarn. The method comprises the following process steps: A, performing solid phase polymerization: crystallizing low-viscosity spinning-grade polyester chips at the temperature of 150-170 DEG C under the protection of the inert gas of nitrogen, and heating to 200-225 DEG C for performing a condensation polymerization reaction to obtain high-viscosity chips; B, extruding the obtained high-viscosity chips in a screw extruder at the temperature of 300-330 DEG C, fusing into a fused spinning solution, spinning into strands through a spinning assembly under the pressure of 15-20MPa, and cooling, blowing and curing the strands into nascent fibers; C, coating the obtained nascent fibers with a stock solution bonding reinforcing aid, performing multi-stage drafting, and performing heat shaping; D, coating the fibers subjected to heat shaping treatment with the stock solution bonding reinforcing aid.
Description
technical field [0001] The invention relates to a production method of reinforced polyester industrial filament bonded with polypropylene, belonging to the technical field of polyester industrial fibers. Background technique [0002] Polyester industrial yarn has always been a good raw material for making packaging strapping because of its excellent properties such as high strength, high modulus, acid and alkali resistance, and aging resistance. However, with the advancement of technology and product development in the strapping manufacturing industry, Continuous development, using polypropylene coating to bond strapping to increase its service life and reduce production costs has become a new product development direction, and the poor adhesion between polyester fiber and polypropylene is its natural defect. Therefore, strapping is manufactured The industry has put forward new requirements for the polyester industrial yarn industry, that is, how to develop a polyester fiber...
Claims
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IPC IPC(8): D01D13/00D01D11/06D01F11/08
Inventor 茅惠新商坤民宋明根蒋权
Owner ZHEJIANG UNIFULL IND FIBER