Shanghai Daoqin Plastics Co., Ltd.

济南考格尔: is what holding pressure time long sink marks, especially is thick or ps material? high rigid super tough wear resistant: from 模流理论 upper 讲, this type of 情况不太 can can 出现, remove non its it conditions 设置严 heavy non method, ratio mold temperature, pressure and other. zjhzylf: high pressure holding pressure 啊, shrink short time, improve/increase mold temperature. linsanhu: can to cycle short sink marks small! this is 违反规律 操 as,但却 is has 效!因 is demolding fast cooling fast, cooling fast water small!矛盾8888: holding pressure time long for products shrinkage has 一定 帮助啊! 但楼主说 can can has other causes 吧. generally thick products injection molding parts time long holding pressure time long therefore production cycle long. therefore can can is injection molding parts mold large temperature degree rise high product cooling generate shrinkage! PS molding shrinkage comparison 底, generally has 0.4% to 0.7%. is lower 先: holding pressure time long, injection molding parts cycle long, is PS不会出现 this type of 情况, is is add what easy carbon filling material? if has easy carbon filling material, filling material in carbon process in generate very high hot amount, make product shrinkage, aging, heavy has 烧糊 感觉. carbon product color dark. can lower, 就知道.