Types of Plastic Molding from Auto Parts Mould Suppliers

1. Plastic molding: injection molding

It is a method of heating and melting plastic in the heating barrel of the injection molding machine, and then pushing the melt into the cavity of the closed mold by the reciprocating screw.

It can not only produce high-precision, high-quality products at high productivity, but also process a variety of plastics, and has a large output (about 1/3 of the total plastic) and a wide range of uses, so injection molding is an important part of plastic processing. One of the plastic molding methods.

2. Plastic molding: extrusion molding

Extrusion is the process of continuously molding plastic in a flowing state through a die by heating and pressurizing it in an extruder.

It is generally used for plastic molding such as sheet, pipe, monofilament, flat wire, film, wire, cable coating, etc. It has a wide range of uses and high output. Therefore, it is one of the important molding methods in plastic processing.

3. Plastic molding: foam molding

It refers to the method of adding appropriate foaming agent to foaming materials to produce porous or foamed products. Foamed products have the advantages of low relative density, high specific strength, less raw material consumption, sound insulation and heat insulation. Foaming materials include PVC, PE, PS, etc.

Products include films, sheets, pipes, profiles, etc. Foaming can be divided into chemical foaming and physical foaming.

4. Plastic molding: blow molding

Blow molding (expanded film) molding (or hollow blow molding) refers to a molding method that uses fluid (compressed air) pressure to blow a thermoplastic parison or sheet in a closed mold into a hollow product.

Plastic containers produced by this method, such as various bottles, square barrels, round or flat barrels, and gasoline cans, have been widely used, and various industrial parts and daily necessities have been newly developed, such as double-wall box products, L-shaped products. Ring buckets, palletizing boards, surfboards, seat backs, desks, and car front spoilers, belt covers, dashboards, air conditioning vents, etc., have been used in practice. Processing materials have developed from daily plastics to engineering plastics. Now blow molding has become one of the important plastic molding services in plastic processing.

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