The addition of flame retardants and additives in flame-retardant PP materials is dissolved at high temperatures and filled in the mold cavity at high speed and high pressure during the injection molding process. If the mold has a large amount of glue, the exhaust will not be enough. Otherwise, gas will accumulate in the mold and easily produce a "sticky" phenomenon on the surface of the mold; Generally speaking, molds made of flame-retardant materials have relatively high exhaust requirements. For parts with a large amount of glue, We can use multi-stage injection molding and speed and position control to alleviate the release of gas during the injection molding process. Guangdong Jushi Chemical Co., Ltd. has the most professional R&D and after-sales service team to solve this problem for you.