Shanghai Daoqin Plastics Co., Ltd.

injection molding processing machine machine material also flash, 溢边, and other, large more in injection molding processing mold separation combined upper. 如: injection molding processing mold separation type 面, slip block slip 配部位, parts 缝隙, 顶杆 孔隙 and other 处. material and solution will 会进一步 expand large 化, from pressure injection molding processing mold formed local 陷塌, formed property loss 害. parts and 顶杆孔隙 溢 material also make products in upper, effect/influence demolding. 1, equipment 方面 （1） machine true positive clamping force 不足. selection injection molding processing machine 时, machine clamping force must high injection molding processing molding products toward 投影面积 in injection formed force, will formed 胀模, flash. （2） clamping plant/unit adjustment 不佳, machine has 伸直, generate or left right or upper lower clamping 不均衡, injection molding processing mold degree can to phenomenon formed injection molding processing mold mono 侧一边 by combined 紧而另一边不密贴 情况, injection will flash. （3） injection molding processing mold 本身平行 degree 不佳, or 装 不平行, or sheet/plate 不平行, or 拉杆受 force distribution 不均, deformation 不均, this will formed clamping 不紧密而 generate flash. （4）止回 ring abrasion loss heavy, elastic nozzle elastic 簧失效, material or screw abrasion loss large, material cooling system 失效造 formed “架桥” phenomenon, machine 筒调定 注 material amount 不足, 缓冲垫 small and other can can formed flash 反复出现, must and repair or more parts. 2, injection molding processing mold 方面（1） injection molding processing mold separation type degree 差. active sheet/plate （如 in sheet/plate ） deformation warpage; separation type upper has material or frame has 凸出 橇印毛刺; injection molding processing mold 因早先 flash pressure make type 腔周边 fatigue 塌陷. （2） injection molding processing mold design combined 理. injection molding processing mold type 腔 开设位置 偏, injection injection molding processing mold mono 边发生张 force, flash. plastics flow property good, polyethylene (PE), polypropylene (PP), nylon and other, in melt lower viscosity very low, easy active or solid 定 缝隙, requirements injection molding processing mold manufacturing degree relatively high. in effect/influence products property front lower amount in quality for in upper, in products thick 实 部位入 material, can anti 止一边缺 material belt/tape flash 情况. products in or its has molding 孔时, upper in upper 开设侧 gate. is in relatively large injection pressure lower, if clamping force 不足, make injection molding processing mold in this separation function force 不够而发生 light micro warpage, from formed flash. injection molding processing mold belt/tape has active parts 时, its 侧面 投影面积也受 molding pressure function, if force 不够也会造 formed flash. sliding type combined degree defect, solid type and type 腔安装位置偏移也会 generate flash. type gas defect, in separation type upper has gas 沟, or gas shallow, or deep large, or material retardant will formed flash. for more type injection molding processing mold attention/notes separation runner combined gate combined design, will formed 充模受 force 不均而 generate flash. 3, process 方面 （1） injection pressure high or injection speed degree fast. due to high pressure high speed, for injection molding processing mold force increase large 导致溢 material. need according to products thick thin adjustment injection speed degree and injection time, thin products need use high speed speed 充模, rear again 进注; thick products need use low speed 充模, let table/sheet in to pressure front large solid lower. （2） add material amount large formed flash. value attention/notes is need is anti 止凹陷而注入 more material, this 样凹陷未必 can “填平”, flash 却会出现. this type of application long injection time or holding pressure time solution. （3） machine 筒, nozzle temperature degree high or injection molding processing mold temperature degree high make plastics degree decline, flow property increase large, in 流畅进模 情况 lower formed flash. 4, raw materials 方面（1） plastics viscosity high or low can can flash. viscosity low plastics nylon, polyethylene (PE), polypropylene (PP) and other, improve/increase clamping force; water property strong/high plastics or for water plastics in high temperature lower large degree reduce flow viscosity, increase flash can can property, for this plastics must drying; recycled material more plastics viscosity decline, necessary need 补充滞留 formed separation. plastics viscosity high, flow retardant force increase large, generate large back pressure make mold cavity pressure improve/increase, formed clamping force 不足而 generate flash. （2） plastics raw materials degree large small 不均时会 make add material amount 变化不定, made parts or 不满, or flash.