Shanghai Daoqin Plastics Co., Ltd.

in PP, PE recycled material in, injection molding parts processing 家会遇 to very more difficult solution issues, that 今天我们就 举一 例子. large 家知道, recycled material has separation is from outer Imported, Japan, USA, Korea and other. has types PP, PE film, light very difficult 识别, this type of film transparent degree and light degree comparison good, is to upper to extrusion machine, rear 会出现 a small amount of black spots, in this process in temperature degree 掌控也 is 适当, and has other 杂质掺进, that is what 会出现 this black spots 呢? causes is this type of film in production 时候因 is packaging need, coating upper types anti outer coating material, this type of coating material temperature degree in 120 degree left right need separation understanding, to film rear 150－160 degree this type of coating material 焦化变灰, is upper 面 出现 black spots. this 样就导致 this type of film in price reduce, to production belt/tape loss 失. therefore injection molding parts processing in 进货 时候一定 need attention/notes this type of PP, PE film, belt/tape necessary loss.