Preparation method of ultrahigh molecular weight polyethylene monofilament knotted fishing net

A technology of ultra-high molecular weight and polyethylene, which is applied in the direction of single-component polyolefin rayon, knotting netting, rayon manufacturing, etc., can solve the problem of high price of knotless fishing net weaving machines, low fiber strength utilization rate, fiber In order to reduce the possibility of large algae outbreaks, increase the service life and improve the strength of nodules

Active Publication Date: 2014-02-12
王庆昭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the mesh is damaged, the damaged part of the net will expand, and it will easily lead to large economic losses when used in cage culture.
In addition, due to the high price of knotless fishing net weaving machines, the price of knotless woven mesh is significantly higher than that of knotted mesh
[0005] In short, regardless of whether multi-strand mon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The ultra-high molecular weight polyethylene raw material is melted and extruded through a special melt extruder. The extruder is a capillary extruder, and the diameter of the capillary is 2mm.

[0029] The extruded melt is cooled by a 1m-long water tank with a temperature of 20-35°C, and pre-stretched by 2 times under the action of a traction roller.

[0030] The as-spun yarn formed by cooling enters the stretching machine, the primary stretching temperature is 85°C, the stretching ratio is 15, the secondary stretching temperature is 100°C, the stretching ratio is 3, and the third stretching temperature is 110°C , the elongation ratio is 2, the stretched monofilament is put into the shaping machine for shaping, the shaping temperature is 90°C, and the shrinkage rate is 1% to 3%, so as to obtain ultra-high molecular weight polyethylene monofilament with a diameter of 0.4mm .

[0031] The shaped monofilament fiber is wound up on a winder, the winding tension is 100N, an...

Embodiment 2

[0036] The ultra-high molecular weight polyethylene raw material is melted and extruded by a special melt extruder. The extruder is a capillary extruder, and the diameter of the capillary is 3mm.

[0037] The extruded melt is cooled by a 1m-long water tank with a temperature of 20-35°C, and pre-stretched by 2 times under the action of a traction roller. The as-spun yarn formed by cooling enters the stretching machine, the first-stage stretching temperature is 85°C, the elongation ratio is 15, the second-stage stretching temperature is 105°C, the elongation ratio is 2.5, and the third-stage stretching temperature is 115°C , and the draw ratio is 1.5, so that an ultra-high molecular weight polyethylene monofilament with a diameter of 0.8 mm is prepared.

[0038] The shaped monofilament fibers are wound up on a winder, the winding tension is 150N, and the winding speed is 20-30m / min.

[0039] Use the coiled monofilament to weave a fishing net on a knotted netting machine with a ...

Embodiment 3

[0043] The ultra-high molecular weight polyethylene raw material is melted and extruded by a special melt extruder. The extruder is a capillary extruder, and the diameter of the capillary is 4mm.

[0044] The extruded melt is cooled by a 1m-long water tank with a temperature of 20-35°C, and pre-stretched by 2 times under the action of a traction roller. The as-spun yarn formed by cooling enters the stretching machine, the primary stretching temperature is 95°C, the stretching ratio is 15, the secondary stretching temperature is 110°C, the stretching ratio is 2.5, and the third stretching temperature is 120°C , the elongation ratio is 1.5, thus the ultra-high molecular weight polyethylene monofilament with a diameter of 0.8 mm is prepared.

[0045] The shaped monofilament fibers are wound up on a winder, the winding tension is 150N, and the winding speed is 20-30m / min.

[0046] Use the coiled monofilament to weave a fishing net on a knotted netting machine with a mesh size of ...

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Abstract

The invention discloses a preparation method of an ultrahigh molecular weight polyethylene monofilament knotted fishing net. The preparation method comprises the following steps: performing melted extrusion on ultrahigh molecular weight polyethylene raw materials by using an extruding machine; cooling the extruded melt and pre-stretching the melt under the action of a drawing roller; putting initial raw filaments which are formed by cooling into a stretching machine to be subjected to three-stage stretching so as to prepare ultrahigh molecular weight polyethylene monofilaments; reeling monofilament fiber on a reeling machine; weaving the reeled monofilaments into a fishing net on a knotted net weaving machine; performing follow-up treatment and other steps on the woven fishing net, wherein nanometer molybdenum disulfide and nano-graphite are added into the ultrahigh molecular weight polyethylene raw materials. According to the preparation method, the process flow is short; the fiber processing cost is low; the prepared ultrahigh molecular weight polyethylene monofilament knotted fishing net can effectively resist impact of wind wave and large predators, prolongs the service life of meshes and reduces the attached amount of marine organisms.

Description

technical field [0001] The invention relates to a method for preparing monofilament fishing nets, in particular to a method for preparing ultra-high molecular weight polyethylene monofilament knotted fishing nets. Background technique [0002] At present, the fishing nets used in the fishery are mostly woven from nylon and polyethylene yarns, and those used in cage culture are multifilament fishing nets. The more widely used mesh weaving techniques are: knotted mesh, which is divided into slip knot, dead knot and monofilament knot, etc.; knotless mesh, which is divided into warp knitted mesh, twisted mesh, braided mesh, etc. . [0003] Due to the large number of gaps in the multifilament mesh, a large number of filamentous algae, such as Spirogyra, Double Star Algae, and Transplate algae, will be fixed in the gaps between the multifilament mesh threads, such as high-pressure water gun washing, etc. It is difficult to remove it effectively by the decontamination method, and...

Claims

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Application Information

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IPC IPC(8): D04G1/04D01F6/46D01F1/10D01D5/08D01D5/088D01D5/16D01D10/02D01D7/00D06B3/30
Inventor 王庆昭高兴鹏
Owner 王庆昭
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