Compression injection molding is a relatively traditional injection molding method
Principle:
First, inject the molten material into the mold cavity, and when the molten material enters the mold lung. The mold opens slightly under its pressure blade; After the molten material fills the mold cavity, use a high-pressure locking mold to obtain the required product. The second step is compression molding. Due to the fact that the molten material enters the mold cavity when the mold has been slightly opened, the required allowable mold labor is relatively small.
During the molding process, the screw no longer injects material into the mold cavity, but relies on high-pressure locking of the mold to force Lf against the plastic, resulting in a smaller product orientation and lower internal stress. This method is particularly suitable for products with high transparency requirements that are formed and have a small volume;
Advantages:
It can increase the flow length ratio of injection molded parts; Adopting smaller locking force and injection pressure; Reduce internal stress of materials; And improve processing productivity.
Injection compression molding is suitable for products made of various thermoplastic engineering plastics; Such as large-sized curved parts, thin-walled, miniaturized parts, optical lenses, and parts with good impact resistance requirements
0 comments:
Post a Comment