Advantages And Mechanism Of Plastic Injection Molding Process

Plastic injection moulding process is preferred to manufacture plastic parts like bottle caps, electronic housings, pocket combs, automotive interiors, and numerous plastic products. Plastic injection mould is ideal to produce multiple parts in one cycle.

Advantages of Injection molding china

• High tolerances 
•  Select wide range of materials
• Repeatability
• Minimal scrap losses
• Low labor cost
• Produced parts need little finish, after moulding

Some complex parts can encounter surface defects or warp issues. Therefore, Chinese molding companies design plastic injection moulded parts carefully.

After a specific part gets designed, engineers assign it to a mould maker, at the China Cast Company. Moulds are designed using aluminium or steel then machined accurately to form desired parts features. 

Injection moulding process

Thermosetting plastic and thermoplastic materials are used in the injection moulding manufacturing process. Material is fed in a heated barrel, combined and forced in a mould cavity, which is controlled by reciprocating screw. When the moulded plastic part cools and hardens, it will be set in accordance to the configuration of the mould cavity. 

Selection of mould materials

Thousands of different materials are available for moulds. Product designers select materials on the basis of strength and function needed for the ultimate part. Each material has dissimilar limitations for moulding that needs to be considered. Common examples of -

·         Thermoplastic materials include nylon, polystyrene and polyethylene

·         Thermosetting plastic materials include epoxy and phenolic

Moulded part size

Plastic Manufacturers China outsource the creation of moulds with different sizes and shapes, especially parts with complex geometrical details. The mould maker makes sure that the size of injection moulded part is based on different factors like material, shape, wall thickness and more. It is also made sure that too many details are not crammed in a single part or it may root visual defects.

Complex parts are created using multifaceted injection moulds. Some injection moulds facilitate to re-insert previously created injection moulded parts to form a new plastic layer over the first. It is called overmoulding.

China moldings provide fine and precise injection mould solution to diverse sectors like aerospace, medical, toys, consumer, packaging, plumbing, construction and automotive.