Shanghai Daoqin Plastics Co., Ltd.

每 injection molding processing 厂总会出现 令人头疼 事情, ratio black spots, very difficult this type of phenomenon 发生似. although very difficult, is 每家 injection molding processing 厂 combined as can this is, that combined as product use more this is, has good good research its in causes, to solution issues solution/scheme.
    首页就 is need ensure to 客户手 in injection molding processing parts is good, solution issues comparison important is, using/adopting light guide sheet/plate, in 台式放 large lower 进行检验, this generally can black spots issues injection molding processing parts 查出, 不至于出现 to 客户 手 in.
    its is need analysis black spots issues 源头, issues solution, Shanghai 奎星经 long experience, summary 出, attention/notes force heavy in below/following several good good 看待. material, material temperature, screw type type, has 无角, bad 境, machine and other 六 方面.
    lower is black spots issues analysis key points:
1, material rear good anti 尘, 导致材 material bag upper 面灰尘极 more
2, in add material process in, material bag 没清理 dry 净就进行 add material, material bag upper 面 灰尘 and 杂质倒入材 material in
3, add material Color Matching material bag upper 面 纸销未撕 dry 净, 导致材 material material will material 仓倒 进
4, long time use 未清理 or deep color shallow color material tool 清理不 dry 净
5, Raw Materials, masterbatch add rear, cover/cap cover/cap good, workshop in 做卫生时, use gas tube/pipe 清理, 导致杂质搞 to material in
6, injection molding mold long time maintenance, and slip block long time scratch, iron in production generate black spots
7, injection molding mold long time 未清理, upper upper 灰尘, clamping machine 床震动, 导致该灰尘落入 injection molding mold 里面
8, Raw Materials, masterbatch material has a small amount of black spots （ material positive 常状态）
9, packaging in process in, will material bag 叉破, easy will 杂质污染进
10 换 material process in, deep color shallow color 炮筒未清理 dry 净, production easy generate 黑纹
11 因 production positive 常, will material from 烘箱放出, use packaging dry 净
12 材 material in workshop, due to 通道堵塞, add upper machine rear water heavy, in 行驶时容 easy from material bag upper 踏, material bag upper 面杂质, relatively more
13 部 separation machine product requirements relatively high （密封不 good ）, has machine use deep color powder material, material in material or material 时, easy deep color material powder 尘落入该材 material in
14 injection molding processing workshop use gas tube/pipe machine 床, easy 导致烘箱 in material 时, machine upper 面 杂质 from machine 进风口进入烘箱材 material in.