Shanghai Daoqin Plastics Co., Ltd.

solution sink marks issues, 首先会想 to is rise high pressure and long time. if speed degree already very fast, 就不利于 solution sink marks issues. therefore has sink marks difficult remove 时, combined reduce speed degree solution.

reduce speed degree, can make in front 面 熔胶 and water between formed relatively large temperature degree 差, has 利于熔胶由远至近顺序凝 solid and shrink, meanwhile has 利于距 water relatively sink marks obtain relatively high pressure 补充, for issues solution has very large 帮助.

due to reduce speed degree, in front 面 熔胶 temperature degree relatively low, speed degree also already slow, injection molding parts easy generate 批锋, pressure and time can again rise high and long 一, this also more has solution sink marks heavy issues.

in addition, if again using/adopting speed degree more slow, pressure more high, time more long most rear grade 末端充 type and grade decrease slow add pressure holding pressure methods, will more add obvious. therefore method 一开始便 using/adopting relatively slow speed degree 射胶时, from rear 期开始 using/adopting method is very good remedy method.

不 need value is, type in slow also 会不利于 solution sink marks issues. is and other to type 腔 时候, 熔胶都 already full cold 冻, 就像熔胶 temperature degree low 一样, 根本就没 has can force again for sink marks 进行补 shrink.