What is the difference between an injection mold and a compression mold?

One. Different in nature

1). Injection mold: a tool for producing plastic products, but also a tool for making plastic products complete in structure and precise in size.

2). Compression mold: plastic material is directly added to the open mold cavity, the mold is closed, the plastic flows to fill the cavity under the action of heating and pressure, and then the product is hardened and shaped by chemical crosslinking or physical cooling.

Two, the application is different

1). Compression mold: Application is mainly used in the manufacture of thermosetting plastics (see thermosetting resin), such as phenolic, melamine-formaldehyde, urea-formaldehyde and other plastics, as well as glass fiber unsaturated polyester and epoxy resin reinforced plastic products. Thermoplastics (see Thermoplastic Resins) are also made by this process, such as polyvinyl chloride recording.

2). Injection molds: important process equipment for the production of various industrial products. With the rapid development of the plastics industry and the promotion and application of plastic products in aviation, aerospace, electronics, machinery, ships, automobiles and other fields, the requirements for mold products are getting higher and higher, and traditional mold design methods are becoming less and less.

Compared with traditional mold design, computer-aided engineering (CAE) technology has huge advantages in improving productivity, ensuring product quality, reducing costs and labor intensity.