When molding with excessive injection pressure, the molding shrinkage rate is smaller than expected, and

demolding becomes difficult. When molding with excessive injection pressure, the molding shrinkage rate is

smaller than expected, and demolding becomes difficult.

At this time, if the injection pressure is reduced, the injection time is shortened, and the melt and mold

temperature are lowered, it becomes easier to demold. In this case, it is more effective to use a release agent that

reduces the friction between the plastic and the mold. For the mold, methods such as improving the finish,

eliminating the convex and concave side walls, grinding, and adding ejector pins are also effective. When forming

deeper parts, blowing compressed air between the mold and the part is more helpful for demolding. 

Qingdao Sainuo Chemical Co.,Ltd. We are manufacturer for PE wax, PP wax, OPE wax, EVA wax, PEMA, EBS,

Zinc/ Calcium Stearate…. Our products have passed the REACH, ROHS, PAHS, FDA testing.

Sainuo rest assured wax, welcome your inquiry!

Website：https://www.sanowax.com

E-mail：sales@qdsainuo.com

               sales1@qdsainuo.com

Adress：Room 2702,Block B, Suning Building, Jingkou Road, Licang District, Qingdao,China