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                什么是塑料缩Ψ水

                信息来▓源于:互联网 发布于:2020-07-27

                塑料缩水现象主要是因为由于体积收缩,壁ζ厚处的表面原料被拉入,因化时,在成品表面』出现凹陷痕迹。缩水是成品表︾面所发生的不良现象中最多的,大∏多发生于壁厚处,一般如果压力下降则收缩机率就会较大。

                1.塑料注射成〓型方面提高注射压力并在注射结束后给模具保∴压. 并给予足够的冷却时间

                2.塑料模具方面模具的冷却水路设计不合理,需修改模具 ;

                3.产品结构方面由于产品的肉厚不均匀,则产品胶厚的部分难于冷却外表面冷却了,但内部还可能是熔融体
                ,所以这就要改变产品的结构设计。