Plastic diversion net shaping process

Abstract

The invention discloses a plastic flow guide net sizing technology. The technology is characterized in that after a plastic net is extruded out, dry type vacuum cooling sizing is carried out on the plastic net in a sizing device, and then the plastic net is cooled in a cooling water tank; in the dry type vacuum cooling sizing process, the vacuum degree is controlled to be minus 0.5 barometric pressure to minus 0.8 barometric pressure; water cooling is carried out on the periphery of a sizing frame, and the cooling temperature is controlled to range from 20 DEG C to 30 DEG C; the roughness of the contact portion of the sizing device and the plastic net is controlled to be 1 micrometer to 1.5 micrometers; the vacuum cooling sizing time is 9 seconds to 21 seconds. According to the technology, the plastic net with the mesh diameter of 0.5 mm to 4 mm can be produced; the thickness stability of the plastic net is quite high, the surface of the plastic net is stable, the warp and weft shape of the meshes is stable, and the technology completely meets the high-standard requirement of the antiosmosis water industry.

Description

technical field [0001] The invention relates to a shaping process of a plastic diversion net. Background technique [0002] The extrusion process of plastic mesh was formed in the 1950s. Invented by Frank Bryan Mercer in England. The traditional extruded net is extruded by a rotating machine head, exposed to the air to cool naturally, and then rolled to form a grid-shaped plastic product. These grid-shaped plastic products are mainly used for fences, packaging and other purposes. Due to the limitation of the sizing system, the traditional process can only produce large mesh plastic mesh with a mesh diameter greater than 5mm, and the thickness of the mesh cannot be precisely controlled, and the shape and surface properties of the mesh longitude and latitude lines cannot be precisely controlled. These rough products only It can be used for low-value purposes such as plastic fences and packaging nets, which cannot meet the high requirements of the water treatment industry. ...

AI Technical Summary

Problems solved by technology

Due to the limitation of the sizing system, the traditional process can only produce large mesh plastic mesh with a mesh diameter greater than 5mm, and the thickness of the mesh cannot be precisely controlled, and the shape and surface properties of the mesh longitude and latitude lines cannot be precisely controlled. These rough products only It can be used for low-value purposes such as plastic fences and packaging nets, which cannot meet the high requirements of the water treatment industry