Shanghai Daoqin Plastics Co., Ltd.

injection molding parts Common solution methods solution methods 呈 现 问 题: plastics 呈波浪. 原 因: gate or its it separation narrow, plastics solid parts front 移时, surface generate 波纹. understanding 决 方 method: 1. increase 注直径 2. improve/increase and injection molding parts mold temperature degree 3. improve/increase material high degree 4. add fast injection molding parts speed degree 5. decrease slow material speed degree 6. more injection molding parts mold cooling water Imported 位, make its gate 7. expand large gate. 二, 呈 现 问 题: parts 呈银纹形. 原 因: plastics water 份, mixed material non-uniform, injection molding parts gas, additives or demolding agent more. understanding 决 方 method: 1. add strong/high pressure 2. decrease slow speed 3.清理 material 筒 4. improve/increase mold temperature 5.改 gate 位置 6. expand large runner and gate 7.烘 material 8. material in 安装红 outer 线灯. 三, 呈 现 问 题: plastics defect. 原 因: plastics temperature degree low, can 熔化, or gas 体排泄不足导致两股 above separation mixed combined generate fine or bubbles. understanding 决 方 method: 1. improve/increase material temperature 2. improve/increase temperature 3. increase speed 4.接缝线 outer cold material 池 5.设放 gas 口 6.改变 gate or gate 7.不 need use demolding agent 8.转 use easy flow low viscosity type raw materials. 四, 呈 现 问 题: parts 呈现空洞. 原 因: plastics in material solid 化期间 surface low temperature 模壁, shrinkage in thick 壁段而造 formed 空洞, or gas formed 空洞. understanding 决 方 method: 1. improve/increase pressure （ and pressure ） 2.延 long 注时 3. reduce material solid temperature degree 4.消 decrease thick degree 至6mm below/following, necessary 时设置 and other thick 助线, and remove more thick 5. expand large gate 6. shrink short runner 7.调匀 mold temperature 8. more gate 位置, troubleshooting gas. 五, 呈 现 问 题: parts or material. 原 因: machine injection molding parts and property can 不足, material defect, gate 截面太 fine, 模壁太 thin or gas defect. understanding 决 方 method: 1. increase material speed rate, still 不足, 则需换 heavy type machine 械 2.装 anti 漏注阀式 screw 3. improve/increase pressure 4. improve/increase material 筒, solid and injection molding parts mold temperature degree 5.查 electrical hot is 否断线 6.查注咀 is 否堵塞, increase ring speed degree 7. improve/increase injection molding parts mold gas can force 8. add large gate 截面 9. increase product thick 10. add 设助线, renovation material 流 11. selection low viscosity raw materials 12. add lubricant. 六, 呈 现 问 题: clamping extrusion plastics. 原 因: material temperature and pressure high, or clamping force 不足. understanding 决 方 method: 1. reduce pressure and solid temperature degree 2. shrink short 注时 3. decrease/reduce material speed degree 4.改 use high clamping force machine 5. renovation clamping surface combined and clamping surface 6.转 use low viscosity material. 七, 呈 现 问 题: parts surface 呈凹痕. 原 因: parts surface cooling, its surface 凹痕. understanding 决 方 method: 1. increase material speed rate 2. improve/increase inner pressure （二次 pressure ）3. reduce material solid temperature degree 4． improve/increase injection molding parts amount 5. increase speed 6．延 long 注时 7． make injection molding parts mold temperature degree uniform 8． more gate 位置 9． expand large gate 10． shrink short injection molding parts mold runner. 八, 呈 现 问 题: parts 呈扭曲 deformation. 原 因: injection molding parts residual stress 松弛导致塑 parts deformation 扭曲. understanding 决 方 method: 1. reduce pressure 2. reduce material solid temperature degree 3.延 long cooling time 4.调匀 material parts thick and demolding as 5.添设 demolding 锁 6.改变 gate 位置 7.调匀 mold temperature.