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Method for manufacturing anti-turning high-strength net mesh for aquaculture net cages and catching and fishing tools

A manufacturing method and anti-rotation technology, which is applied in fishing, application, fishing nets, etc., can solve the problems of decreased quality of catches, low breaking strength, and poor anti-rotational properties, and achieve improved sound velocity orientation, improved breaking strength, and improved stability. sexual effect

Inactive Publication Date: 2011-02-09
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

The nets used in the existing breeding cages or fishing gear are three-strand ordinary polyethylene nets, which have low breaking strength and poor rotation resistance, and the nets will be broken during operation. Its safety, impact resistance, and adaptability to the aquatic industry Poor performance, it is difficult to meet the special needs of aquaculture cages or fishing gear for underwater operations
Accidents such as the rotation of the net and the intertwining of the net and the net have caused serious damage to the cage culture objects and a decline in the quality of the catch, which has brought great losses to the farmers or fishermen. Lost nets can cause "ghost fishing" and cause resource damage. and waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1: the manufacture method of the anti-rotation high-strength net net for the 10mm diameter φ 10mm breeding cage or fishing gear adopts the net net with monofilament production, net yarn production, net stock production and net net production method:

[0007] (1) Manufacturing method of monofilament for mesh production:

[0008] Clean the mixer, mix HDPE5000S resin (melt index: 0.9g / 10min) produced by Yangzi Petrochemical, additives (such as turpentine), and T30S PP resin (melt index: 2.1-3.9g / 10min) produced by Daqing Petrochemical before mixing. Sieve to remove impurities that may be mixed in the resin raw materials to ensure normal spinning and reduce the end-break rate of finished silk; dry HDPE5000S resin masterbatch, color masterbatch or colorant (such as suitable for aquatic products) after sieving High-quality sea green or black masterbatch with good dispersibility for spinning in the field, the addition amount is 0.27-1.03% of the resin weight), dry T...

Embodiment 2

[0015] Embodiment 2: The production of the anti-rotation high-strength mesh net for the breeding net cage or fishing gear with a diameter of φ16mm includes the monofilament production of the net net, the production of the net yarn, the production of the net stock and the production of the net net:

[0016] (1) Manufacturing method of monofilament for mesh production:

[0017] Make diameter 0.20mm, linear density 0.036ktex by the same method in embodiment 1, breaking strength is greater than 6.40cN / dtex, and elongation at break 11~22% net mesh is made with monofilament.

[0018] (2) The production method of the gauze used in the production of net gauze:

[0019] The same method as in Example 1 is used to produce the mesh yarn with a diameter of 0.90mm, which is also used for the culture cage of diameter φ 16mm or the anti-rotation high-strength net mesh for fishing gear.

[0020] (3) Method for making outlines for network outlines

[0021] The number of yarns used for the ant...

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Abstract

The invention discloses a method for manufacturing an anti-turning high strength net mesh for aquaculture net cages and catching and fishing tools, which relates to net meshes of net cages and aims to provide an anti-turning high strength net mesh. The method comprises: a filament manufacturing method, a mesh yarn manufacturing method, a mesh strand manufacturing method and a net mesh manufacturing method. The method is characterized in that: an HDPE 5000S resin, an additive, a T30SPP resin are sieved; the HDPE 5000S resin parent stock, a coloring agent, the PP resin and the additive are stirred evenly and melted and extruded in an extruder, nascent filaments are cooled and pre-drawn, the pre-drawn filaments are thermally drawn twice, and filament bundles are split into filaments; and 10 filaments are twisted to manufacture a 'Z'-direction or 'S'-direction mesh yarn with a diameter of 0.90 millimeter; and mesh yarns for producing mesh strands adopt a layered structure and corresponding mesh yarns are used to manufacture 'Z'-direction or 'S'-direction mesh strands at strand pitches of 25.0 millimeters and 45.0 millimeters respectively; and under stand tension balance adjustment, eight mesh strands including two pairs of S-direction mesh strands and two pairs of Z-direction mesh strands are alternately woven in pair to manufacture the net mesh.

Description

technical field [0001] The invention relates to an anti-rotation high-strength net used for aquaculture net cages or fishing gear. Background technique [0002] Nets are widely used in aquaculture cages or fishing gear in the field of agricultural science and aquatic technology, and their performance is directly related to the performance of assembled net cages or fishing gear. Cage nets and fishing gear nets are divided into anti-rotation nets and non-rotation-resistant nets according to their anti-rotation properties; according to their functions, they are divided into ordinary nets, high-strength nets, wear-resistant nets and durable nets. Wait. Due to the functional requirements of the cages or fishing gear components for the net opening, lowering the rotation, binding positioning and main load, there is a great difference between the net nets used in the culture net cages or fishing gears and the land nets in the selection of fiber materials and the manufacturing proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04C1/00D01D5/088D01D5/12D02G3/22A01K61/00A01K73/02D01F8/06
CPCY02A40/81
Inventor 石建高王鲁民刘永利
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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