1) Injection mold forming process
The factor affecting the surface roughness of the plastic parts of the injection mold is to avoid defects such as cold enthalpy, moiré, foaming and the like from the molding process at the time of molding.

2) Surface roughness of injection molded parts
The surface roughness of the plastic parts is generally 1.6~02μm, which is not required for the surface roughness of the plastic parts. The roughness of the plastic parts is consistent with the surface roughness of the mold; and the surface roughness of the product is required, the surface of the mold The roughness is generally 1 to 2 grades higher than the surface roughness of the plastic part.

It should be noted that during the molding process, the surface roughness of the mold is increased due to the wear of the cavity of the injection mold, and the surface roughness of the plastic part is also increased, so it should be polished and restored after a period of use. For transparent plastic parts, the cavity and core surface roughness of the injection mold is the same.

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