Shanghai Daoqin Plastics Co., Ltd.

plastics products 退火处理 is plastics in material 筒里塑化不均 or product in mold cavity inner cooling speed degree 不均而引起 product internal stress in product in rear has deformation. cracking. aging and other causes. 退火处理 is in product in inner, use hot liquid 体介质如 hot water, hot material 油, hot and other liquid 体, add hot to ratio product use temperature degree high 20-35 degree or ratio product heat deflection temperature (HDT) low 25-35 degree temperature degree lower, will product 放进, time long short need product thick 而定, thick need time long. need attention/notes, 经退火 product hot liquid rear need let it cooling, can use cold water speed cold methods. product generally is PC, PS and other plastics, for/regarding POM, PVC and other plastics use 退火处理.