Shanghai Daoqin Plastics Co., Ltd.

         mold temperature degree is injection molding in most need amount. for/regarding types plastics and plastics parts,存 in mold surface temperature degree 极限, ultra- this 极限就 can can 出现一 types or more more defect effect/influence.

        无论 injection molding types plastics,必 must ensure formed mold surface basic wet lubricating. hot mold surface make plastics surface long time maintain liquid 态,足以 in type inner formed pressure. if type 腔填满 but also in table/sheet hard front, type pressure can will soft/flexible plastics pressure in metal upper, that type surface made high. 另一方面, if in low pressure lower type plastics 暂停,不论 time more short, that it and metal light micro 接触都会造 formed 污点, has by is gate 污斑.

         mold temperature degree more high flow retardant force more small. in many injection molding machine upper, this 自然就意味 more fast gate and type 腔,因 is use injection molding flow control 阀并不纠 positive this 改变, filling more fast in and type inner more high has pressure. can can formed material flash/burrs. due to more hot type 并不冻结 that in high pressure formed front 进入溢 material 边区域 plastics,熔 material can in ejection 杆周围溢 material flash/burrs 并溢出 to separation 割线间隙 inner. this table/sheet need has good injection speed rate control,而一 现代化 flow control device 也确实 can to this 点.

         usually, mold temperature degree rise high decrease/reduce plastics in type inner has cold 凝层, make melt material in type inner more easy flow, from obtain more large parts weight and more good surface quality. meanwhile, mold temperature degree improve/increase also make parts force strong/high degree increase.