Shanghai Daoqin Plastics Co., Ltd.

its defect large has below/following 几点: 　　（一）银纹: 由充模 and cold process in, internal stress toward property effect/influence, direction generate force, make resin flow upper orientation, and non flow orientation generate light rate different 而生闪 light filament 纹, its expand rear, can can make product cracks. remove in injection molding parts process and injection molding parts mold upper attention/notes outer （见 table/sheet, most good product as 退火处理. 如pc material can add hot to 160℃ above maintain 3～5 separation 钟, again cooling can. 　　（二） bubbles: resin inner water gas and other gas 体排不出, （ in injection molding parts mold cold process in ） or 因充模不足, cold surface also fast cold 凝而形 formed “ true 空泡”. its methods table/sheet. 　　（三） surface gloss 差: injection molding parts mold coarse degree large, 另一方面 cold 凝 早, make resin can injection molding parts mold surface 状态, has this make its surface micro small 凹凸不平, make product gloss. its methods table/sheet. 　　（四）震纹: is from gate is in formed 密集波纹, its causes melt viscosity large, front material already in type cold 凝, rear material also 冲破此 cold 凝面, make surface 出现震纹. its methods table/sheet. 　　（五）泛白. 雾晕: main/primary due to in gas in 灰尘落入 raw materials in or raw materials water amount large 而引起. its methods table/sheet. 　　（六）白烟. black spots: main/primary due to plastics in machine inner, local hot make machine resin generate separation understanding or 变质而形 formed. its methods table/sheet. is make 清楚 说明克服 this 缺乏 摄取 measures, table/sheet large 家参考. 　　 table/sheet 四: transparent product defect and methods: methods defect bubbles surface gloss 差震纹泛白, 雾晕白烟, black spots resin raw materials has or 污染清 remove 杂质, 污染清 remove 杂质, 污染清 remove 杂质, resin raw materials drying drying need separation drying need separation drying need separation melt material temperature degree reduce, control ensure again reduce increase increase, especially reduce, control 精确尽 amount reduce material temperature injection pressure increase increase increase increase increase adjustment combined 适, 不变质 injection speed degree increase increase increase injection time increase increase ensure pressure production cycle decrease/reduce decrease/reduce material in machine inner time back pressure pressure adjustment combined increase screw speed decrease/reduce system combined 理（ dimensions and 布局）壁 thick separation add gate 设置布局 combined combined 理（ dimensions and 布局） combined 理, amount short coarse injection molding parts mold temperature degree adjustment 适当, increase increase increase increase cooling time increase increase injection molding parts mold gas gas 孔够位置 for gas 孔够位置 for add cold material improvement gas 孔够位置 for 射嘴, runner, gate can material 流畅, material 流畅, material 流畅, injection amount increase