How to solve plastic mold cavity sticky problem during plastic injection molds processing?

Sometimes we are facing  some technical problems in the molding of plastic injection molds , such as sticky issues on mold cavity, parting surface burrs, weld lines, sink marks, ejector marks and so on. Today we mainly come to understand how to solve this technical problem of mold cavity sticky issues on plastic injection mold products? First of all, the problem we have to consider is the reason of the mucous membrane. The mold of the injection mold is divided into the adhesive front mold and the adhesive back mold. The reasons for the stick mold are determined depending on the situation:

(1) Poor polishing, such as sticking the front mold, may be because the back mold polishing is better than the front mold polishing, and the mold test mold is directly stuck to the front mold during the production process.

(2) The draft of the draft may be unreasonable. Theoretically, the draft of the front die is larger than that of the back die. If the draft is reversed, the product may be stuck to the front die.

(3) There is vacuum when the front mold is opened, and the product is directly sucked into the front mold, which cannot be demoulded normally. It is more common for outer casings and box products.

(4) The rear mold sticking mold may be poorly polished, the drafting angle is too small, and the mold has an inverted buckle.

(5) At the beginning, the mold temperature is too low, and the holding force of the product on the mold is too large.

After understanding the reasons for the mold sticking of plastic injection mold during mold tryouts and mass production, any defects of plastic injection mold is solved. The method: plastic mold before polishing is better than mold itself, and for the products with more rear molds, Increase the draft angle, but depending on the processing of the product; for shells, boxes and other products, if there is vacuum in the front mold when the mold is opened, the front mold should be vented to eliminate the influence of vacuum, some products are behind The mold also needs to be a venting needle; if the product structure requires mold temperature, it is necessary to increase the mold temperature when starting the mold test, and reduce the impact of the mold being too low on the product package; The injection molding process parameters reduce the possibility of mold plastic mold sticking.