Shanghai Daoqin Plastics Co., Ltd.

products defect generate causes 1. products 不足1. material 筒, nozzle and injection molding parts mold temperature degree low 2. add material amount 不够3. material material more 4. injection pressure low 5. injection speed degree slow 6. runner or gate small, gate 数目不够, 位置不当7. mold cavity gas defect 8. injection time short 9. system 发生堵塞10. raw materials flow property 差2. products 溢边1. material 筒, nozzle and injection molding parts mold temperature degree high 2. injection pressure large, clamping force 不足3. injection molding parts mold 密封不严, has material or sheet/plate bending deformation 4. mold cavity gas defect 5. raw materials flow property large 6. add material amount more 3. products has bubbles 1. plastics drying defect, has water separation, mono 体, solvent agent and property gas 体2. plastics has separation understanding 3. injection speed degree fast 4. injection pressure small 5. mold temperature low, 充模不完 full 6. injection molding parts mold gas defect 7. from add material belt/tape gas 4. products inner 陷1. add material amount 不足2. material temperature high 3. products thick or thin versus large 4. injection and holding pressure time short 5. injection pressure 不够6. injection speed degree fast 7. gate 位置不当5.熔接痕1. material temperature low, plastics flow property 差2. injection pressure small 3. injection speed degree slow 4. mold temperature low 5. mold cavity gas defect 6. raw materials to 污染　1. raw materials has water separation and material 　2. material temperature high or low 6. products surface has 3. injection pressure low silver streaks and 波纹4. runner gate dimensions large 　5. parts preheating or temperature degree low 　6. products internal stress large