There are many methods for processing plastic injection products, which can be summarized as the following 4 methods.
1. Blister: Vacuum forming is called blister, which is a kind of plastic processing technology. The main principle is to heat the flat plastic hard sheet to soften it, then use vacuum to absorb it on the mold surface and cool it to form. 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, travel and space, major appliances, and sanitary ware.
2. Injection molding: 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 cooled and shaped into a specific shape according to the mold cavity. The common products introduced by plastic gear manufacturers mainly include: computer case shells, connectors, mobile phone shells, keyboards, mice, speakers, etc.
3. Blow molding: also called hollow blow molding. The tubular plastic parison obtained by extrusion or injection molding of 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 inflate the plastic parison And close to the inner wall of the mold, after cooling and demolding, each hollow product is obtained. The common plastic processing technology for bottles, barrels, cans, boxes and containers for packaging food, beverages, cosmetics 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 the material passes 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.