How to deal with the surface of plastic injection molding mold appears gloss defect?

Plastic injection molding mold will appear a lot of difficulties, injection molding mold is composed of two parts of the moving mold and the fixed mold, the production of plastic products need to use the mold injection molding, is through the injection molding machine will plastic raw materials into the injection mold cavity, after cooling and curing to form the injection molding parts. In the mold manufacturing process, how to deal with the surface of plastic injection molding mold appears gloss defect? The following is the causes and solutions of the surface gloss defect of plastic injection molding mold and. Hope to help you. 1. The mold finish is poor, the cavity surface has rust, etc., the mold exhaust is poor. 2. The mold gating system has defects, should increase the cold well, increase the flow channel, polishing main channel, diverter and gate.
3. The material temperature and mold temperature are low, if necessary, the local heating method can be used at the gate. 4. The processing pressure is too low, the speed is too slow, the injection time is insufficient, the back pressure is insufficient, resulting in poor compactness and the surface is dark. 5. The plastic should be fully plasticized, but to prevent the degradation of the material, the heat should be stable, the cooling should be sufficient, especially the thick wall. 6. Prevent cold material into the parts, if necessary, use self-locking spring or reduce the nozzle temperature. 7. The use of recycled material is too much, the quality of plastic or coloring agent is poor, mixed with water vapor or other impurities, the quality of the lubricant used is poor. 8. Clamping force to be enough.

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