Shanghai Daoqin Plastics Co., Ltd.

        首先 analysis lower is what 会出现 demolding difficult issues, large has 3点,1 mold inner 由凹槽;2 demolding degree 不足;3 mold light degree high.

        二. related Knowledge

        1 due to demolding degree 不足而造 formed fault/failure non Common, in products design 时,必 must in upper demolding degree, demolding degree usually scope/range in 1~2 degree between, in this scope/range inner amount large is good,特殊 场 combined 也允许 is 0.5 degree above

        2 injection shot pressure if high, products mold 太密切贴紧, demolding 就变 困 difficult

        3 is make products mold,通才 use has silicon demolding agent, however use demolding agent can very thin coating 一层. if spray coating thick scratch very difficult. also has due to demolding agent function, products upper printing and other processing very good,一旦 coating in mold upper demolding agent in products upper scratch is versus 当 困 difficult.

        三. solution methods

        1 即时: decline injection shot pressure, shrink short holding pressure time, reduce mold temperature degree reduce demolding speed degree, spray coating demolding agent

        2 short 期: improve/increase mold type light degree

        3 long 期: increase large demolding degree, increase demolding 销 数目

        四. due to material 差异 1 既 heavy also hard material,例如GPPS, due to 脱帽斜 degree 不足而引起 products loss Common. for viscous also soft material,例如PE, has can can make products dry block 状根切掉.