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Method for producing fibers used for twisted threads

A production method and fiber technology, applied in the production of complete sets of equipment for artificial threads, melt spinning, textiles and papermaking, etc., can solve the problems of poor tensile mechanical properties of twisted yarn products, poor adaptability of twisted yarn fibers, and fiber stretching Poor mechanical properties and other problems, to achieve the effect of good spinnability, good durability, and good tensile mechanical properties

Inactive Publication Date: 2015-08-26
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing fibers for twisting in the field use a single high-density polyethylene resin (hereinafter referred to as HDPE resin) as raw material, and are processed and produced by traditional melt spinning technology, which makes the tensile mechanical properties of the fiber poor, resulting in twisted twisted fibers. The tensile mechanical properties of thread products are also relatively poor, which eventually leads to poor quality of seawater fish culture nets and fishing gear made by twisted threads, and accidents of net breaking and fish escape are prone to occur under harsh operating conditions. In the prior art, twisted threads The adaptability of fiber is poor, it is difficult to adapt to the sustainable and healthy development of modern marine fish farming and capture fishery and to meet the needs of the country to promote the construction of marine fish farming and fishing technology. The production method of the tensile mechanical properties of the twisted fiber used for fishing gear, and the solution of its production method has become a long-standing unresolved technical problem in this field

Method used

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Examples

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Embodiment Construction

[0006] Here, a fiber production method for twisted yarn with a linear density of 39.1tex is taken as an example. MMWPE resin (medium molecular weight polyethylene resin with a molecular weight of less than 1 million, the English name is Medium Molecular Weight Polyethylene, abbreviated as MMWPE), HDPE resin, nano SiO 2 , auxiliary agent, mixer, splitting machine, wire collecting machine, single-screw extruder and twice-drawing electric heating drawing machine; MMWPE resin (distributed by Zibo American Standard Polymer Fiber Co., Ltd.) has a melt index of 3.0g / 10min The molecular weight is 600,000-1 million. If the MMWPE resin is damp, it should be dried by wind, sun, and drying; HDPE resin (produced by Yangzi Petrochemical, the melt index should meet 0.6g / 10min-1.5g / 10min, The addition amount is 24.1‰-25.8‰ of the weight of the MMWPE resin. If the HDPE resin is damp, it should be dried by wind, sun, and drying; nano-SiO 2 (Commercially available nano-silica) is added in an am...

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PUM

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Abstract

The invention discloses a method for producing fibers used for twisted threads. According to the method, MMWPE resin, HDPE resin, nanometer SiO2, an auxiliary agent, an agitator, a yarn separating machine, a yarn withdrawal machine, a single screw extruder and a twice-drafting electrical heating drafting machine are adopted, and the method is characterized in that the MMWPE resin, the HDPE resin, the nanometer SiO2 and the auxiliary agent are stirred to be uniform with the agitator, nano-modified compound granules are obtained, the nano-modified compound granules are melt and extruded through the single screw extruder, newly-generated yarn obtained through the extrusion is subjected to cooling and pre-drafting through a cooling water tank and a first drafting roller, pre-drafted yarn is subjected to hot drafting for twice through a high temperature first drafting water bath and a second drafting roller as well as a high temperature second drafting water bath and a third drafting roller, and after the drafting, fiber tows are reeled through the yarn withdrawal machine which uses a moment electric motor; the fiber tows are separated into the fibers used for the twisted threads through the yarn separating machine under the yarn separation tensile force, and the yarn separation tensile force is controlled to be 12%-21% of the fiber breaking force.

Description

technical field [0001] The invention relates to a method for manufacturing fibers for twisted threads in the technical field of seawater fish cultivation and fishing. Background technique [0002] Netting cable is an important material in the technical field of marine fish farming and fishing, which is directly related to the success or failure of marine fish farming and fishing. In the production process of the network cable, people first process the monofilament, multifilament and other fibers into strands, and then twist the strands to form a network cable. The wire made by twisting the strands is called twisted wire. With the development of marine fish farming nets and fishing gear towards large-scale, offshore and low-carbonization, people have put forward higher requirements for the tensile mechanical properties of twisted fibers in this technical field. There are far differences in the technical requirements of textile technology and freshwater fish culture net cage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D1/09D01D13/02
Inventor 石建高余雯雯陈晓雪王磊
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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