A variety of problems can occur during the mold manufacturing process. Today, we will discuss the mold mold failure and the countermeasures for the flow defect of the plastic mold. Flow marks are traces of molten resin remaining on the surface of the molded product. For molded products that value appearance, such as home appliances and cosmetic containers, they can be regarded as quality problems according to their severity. During the flow of molten resin in the mold cavity, if the temperature difference between the contact surface of the mold surface and the front end of the resin is too large, flow marks will be generated.
Countermeasures for molds
First, increase the surface temperature of the cavity.
Second, expand the size of the mold gate.
3. Enlarge the runner size.
Fourth, ensure the size of the cold cavity.
Countermeasures for injection molding
First, increase injection pressure.
Second, increase the injection speed.
Third, fully guarantee the measurement and increase the buffer capacity.
Fourth, extend the dwell time.
Fifth, increase the resin temperature.
6. Increase the diameter of the front end of the nozzle.
Countermeasures for Molded Product Design
Reduce the change in wall thickness of the molded product.