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What are the processes for plastic processing?

  • Author:Zhou Xinyan
  • Source:www.xy-global.com
  • Release on:2021-10-24
1. Blister: Vacuum forming is called blister, which is a kind of plastic processing technology. The main principle is to heat and soften the flat plastic hard sheet, then use vacuum to absorb it on the surface of the mold, and then shape it after cooling. It is mainly divided into two categories: thick blister sheet blister. It is widely used in industries such as automobile accessories, lighting, advertising, decoration, large-scale machinery housing, display type, travel and space type, major appliances, sanitary ware and other industries.

2. Injection: Thermoplastic injection molding. This method is to melt the plastic material and then inject it into the film cavity. Once the molten plastic enters the mold, it is shaped into a certain shape according to the mold cavity. Common products mainly include: computer case shells, connectors, mobile phone shells, keyboards, mice, speakers, etc.

3. Blow molding: also called hollow blow molding, a rapidly developing plastic processing method. The tubular plastic parison obtained by extrusion or injection molding of the thermoplastic resin is placed in a split mold while it is hot (or heated to a softened state). After the mold is closed, compressed air is injected into the parison to blow the plastic parison It expands and clings to the inner wall of the mold, and after cooling and demolding, various hollow products are obtained.

The common plastic processing technology for bottles, barrels, cans, boxes and all containers for packaging food, beverages, cosmetics, medicines and daily necessities in life is blow molding.

4. Extrusion: Extrusion molding is also called extrusion in plastic processing, and extrusion in rubber processing. It refers to a processing method in which materials pass through the action between the barrel and screw of the extruder, while being plasticized by heat, being pushed forward by the screw, and continuously passing through the head to make various cross-section products or semi-products.