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Method for preparing regenerated return polypropylene fibrilled film fibers

A technology of polypropylene and polypropylene filaments, which is applied in fiber processing, fiber cutting, stretch spinning, etc., and can solve the problem of inability to use polypropylene, unavailable price polypropylene staple fibers, and clogging of spinneret holes in melt spinning, etc. problems, achieve good application prospects and reduce production costs

Inactive Publication Date: 2012-03-28
NINGBO HUAYE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polypropylene is spun into polypropylene, generally using the melt spinning process, and the melt spinning process cannot use polypropylene recycled materials, because polypropylene recycled materials often contain a variety of materials other than polypropylene, such as carbonic acid Calcium, polyethylene, PVC, etc., these materials will block the spinneret holes of melt spinning
Therefore, there is no cheap recycled polypropylene staple fiber on the market.

Method used

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  • Method for preparing regenerated return polypropylene fibrilled film fibers
  • Method for preparing regenerated return polypropylene fibrilled film fibers
  • Method for preparing regenerated return polypropylene fibrilled film fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] After the polypropylene regrind is extruded through the polypropylene extruder, it quickly enters the water bath tank, and the water bath is cooled to form a film. The cooled film is pulled out of the water bath by the first drafting roller, and then cut into by the film cutting device. The polypropylene film is cracked, the polypropylene filament is passed through the heated baking plate, and then passed through the second drafting roller, and the polypropylene filament is thermally drawn by using the speed difference between the first drafting roller and the second drafting roller, and then Oil the polypropylene yarn, preheat the oiled polypropylene yarn with steam and curl the polypropylene yarn with a fiber crimper, pass the crimped polypropylene yarn through the oven, and then the polypropylene yarn is dried and shaped. Finally, it is cut into fixed lengths according to the requirements and packed.

Embodiment 2

[0022] After the polypropylene regrind is extruded through the polypropylene extruder, it quickly enters the water bath tank, and the water bath is cooled to form a polypropylene film. The cooled film is pulled out of the water bath by the first drafting roller, and then separated by the film cutting device. Cut into polypropylene filaments, make the polypropylene filaments pass through the heated baking plate, and then pass through the second drafting roller, using the speed difference between the first drafting roller and the second drafting roller, the polypropylene filaments are thermally drawn, and at the same time Oil the polypropylene yarn at the second drafting roller, and then use the opener to open the polypropylene yarn into finer polypropylene yarns, and then cut the polypropylene yarns into required lengths through the fiber cutter, and finally pack them .

Embodiment 3

[0024] After the polypropylene return material is extruded through the polypropylene extruder, it quickly enters the water bath tank and is cooled to form a polypropylene film. The cooled film is pulled out of the water bath by the first drafting roller, and then cut by the film cutting device. into polypropylene filaments, the polypropylene filaments are passed through a heated oven, and then passed through the second drafting roller, using the speed difference between the first drafting roller and the second drafting roller, the polypropylene filaments are thermally drawn, and at the same time Oil the polypropylene filament in the oil bath, then cut the polypropylene filament to the required length by the fiber cutter, and finally pack it.

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PUM

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Abstract

The invention relates to a method for preparing regenerated return polypropylene fibrilled film fibers, which comprises the following steps of extruding return polypropylene, carrying out film splitting on the return polypropylene, slitting the return polypropylene into filaments, coating an oiling agent on the filaments, carrying out steam preheating, curing, drying, cutting and packaging, or comprises the following steps of carrying out film splitting on the return polypropylene, slitting the return polypropylene into filaments, opening, carrying out short-cutting and packaging. In the invention, a fibrilled film filament process is used to carry out spinning, polypropylene regenerated return materials are sufficiently utilized, the production cost of the polypropylene fibers is reduced, and the method has a good application prospect.

Description

technical field [0001] The invention belongs to the field of preparation of split film fibers, in particular to a preparation method of recycled recycled polypropylene split film fibers. Background technique [0002] The varieties of polypropylene include filaments (including undeformed filaments and bulky deformed filaments), short fibers, bristles, split fibers, hollow fibers, shaped fibers, various composite fibers and non-woven fabrics. The main purpose is to make carpets (including carpet base cloth and suede), decorative cloth, furniture cloth, various ropes, strips, fishing nets, linoleum, building reinforcement materials, packaging materials and industrial cloth, such as filter cloth, bag cloth Wait. In addition, it is widely used in clothing. It can be blended with various fibers to make different types of blended fabrics. After knitting, it can be made into shirts, outerwear, sportswear, socks, etc. The quilt made of polypropylene hollow fiber is light, warm and ...

Claims

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Application Information

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IPC IPC(8): D01D5/42D01D5/16D01D10/02D01G1/00D02J13/00
Inventor 廖国华金一平
Owner NINGBO HUAYE MATERIAL TECH
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