Shanghai Daoqin Plastics Co., Ltd.

this type of molding methods can remove plastics parts in melt 缝, 空隙, cracks and micro hydrophobic and other defect, can control reinforcement fiber it using/adopting 主, injection mono and di 绕口 injection molding parts mold. as 时, injection mono 元推动 melt 经 一 绕口 amount mold cavity. more material 经另一 gate 进人辅助 injection mono 元, injection screw rear 退以接受 mold cavity in more melt; rear injection screw front toward mold cavity injection melt, injection mono 元则接受 mold cavity more melt. 主, injection mono 元如此反复推拉, formed mold cavity inner melt 振动剪切 flow, 当靠近模壁 melt solid 化时, melt in 振动剪切 flow, 当靠近靠近模壁 melt solid 化时, melt in 振动剪切 function lower generate orientation 并逐渐 solid 化, formed high orientation degree products. generally products molding 需10次 left right ring, most high can 达40次. 推-拉 injection molding parts molding cycle ratio injection molding parts molding cycle long, due to in 推拉运动 in material by cooling solid 化, holding pressure stage/phase for/regarding control shrinkage and warpage already is very important. in 推-拉 injection molding parts molding in, injection stage/phase and holding pressure stage/phase combined is 一. use types injection process for glass fiber reinforcement LCP 推-拉 injection molding parts molding table/sheet 明, and injection molding parts molding versus ratio, material tensile strength and bending elastic property modulus can separation improve/increase 420％ and 270％.