Method for processing high-performance modified polyethylene monofilaments for manufacturing fishing net

Abstract

The invention discloses a method for processing high-performance modified polyethylene monofilaments for manufacturing a fishing net, relates to a method for processing polyethylene monofilaments for manufacturing a fishing net and aims to provide a method for processing the high-performance modified polyethylene monofilaments for manufacturing the fishing net. In the technical scheme of the invention, a stirring machine, a single-screw extruder, a twice-drafting electrical heating drafting machine, a filament winding machine and a filament separating machine are adopted. The method is characterized by comprising the following steps of: mixing a sieved spinning-grade dry HDPE resin, a dry VERSIFYTM 6002 elastomer, white oil or a turpentine aid; uniformly mixing the materials to obtain an HDPE / VERSIFYTM 6002 elastomer blend and fusing and extruding the blend by using the single-screw extruder; cooling and pre-drafting fused and extruded primary filaments, thermally drafting the pre-drafted filaments twice, rapidly cooling the thermally-drafted filaments from which oil is removed with high-pressure air current and winding modified PE monofilaments by using the winding machine; and separating the modified PE monofilaments into the high-performance modified polyethylene monofilaments for manufacturing the fishing net by using the filament separating machine.

Description

technical field [0001] The invention relates to a processing method of polyethylene monofilament for making fishing nets in the technical field of aquatic products. Background technique [0002] Ethylene (PE) monofilament is the main matrix fiber material used in the production of fishing nets in the field of agricultural science and aquatic technology. Requirements, such as the matrix fiber material used for making nets, it is best to have good breaking strength and nodular strength at the same time, only by special spinning process can we produce high-performance modified PE monofilaments for fishing nets, but The ordinary PE monofilament used in the production of fishing nets in the field of aquatic technology is made of HDPE resin by hot water stretching. In its spinning production, due to improper control of the spinning process, the breaking strength and nodulation strength cannot be balanced. , which will further affect the strength or appearance of the monofilament ...

AI Technical Summary

Problems solved by technology

[0002] Ethylene (PE) monofilament is the main matrix fiber material used in the production of fishing nets in the field of agricultural science and aquatic technology. Requirements, such as the matrix fiber material used for making nets, it is best to have good breaking strength and nodular strength at the same time, only by special spinning process can we produce high-performance modified PE monofilaments for fishing nets, but The ordinary PE monofilament used in the production of fishing nets in the field of aquatic technology is made of HDPE resin by hot water stretching. In its spinning production, due to improper control of the spinning process, the breaking strength and nodulation strength cannot be balanced. , which will further affect the strength or appearance of the monofilament and its downstream net products; the drafting ratio for processing ordinary PE monofilament used in the production of fishing nets is generally about 6.0 to 9.6 times, and the heating medium for spinning It is water (the water temperature is about 94°C), which leads to its defects such as low strength and deviation in wear resistance, which further makes the nets processed with them prone to fishing accidents in fishery production.

With the development of modernization, large-scale and special offshore operation of fishing nets, there is an urgent need for a large number of comprehensive properties of high strength, good roundness, good wear resistance and moderate extensibility that can take into account both breaking strength and nodular strength. Good PE monofilament, but due to the poor adaptability of the existing common PE monofilament for fishing, it is difficult to meet the special needs of modern fishery production