There are many reasons that affect the cooling of the injection mold, such as the shape of the plastic part and the design of the parting surface, the type, temperature and flow rate of the cooling medium, the geometric parameters of the cooling pipe, the layout of our space, the mold material, the melt temperature, and the requirements for the plastic part, which all have a certain impact on the temperature of the injection mold and the plastic part. Now let’s take a closer look.
1. Lower mold temperature can reduce the molding shrinkage of plastic parts.
2. Uniform mold temperature, short cooling time and fast injection speed can reduce the warpage of plastic parts.
3. For crystalline polymers, increasing the mold temperature can stabilize the size of the plastic parts and avoid post crystallization, but it will lead to the defects of prolonged molding cycle and brittle plastic parts.
4. With the increase of crystallinity of crystalline polymer, the stress cracking resistance of plastics decreases, so it is beneficial to reduce the mold temperature. However, for the amorphous polymer with high viscosity, because its resistance to cracking is directly related to the internal stress of the plastic part, it is beneficial to increase the mold temperature and filling speed and reduce the feeding time.
5. If we raise the mold temperature, we can improve the surface quality of plastic parts. The determination of mold temperature is in the process of injection molding. The mold temperature can directly affect the plastic filling, molding, molding cycle and molding quality.
About Huizhou Dj Molding Co., Ltd
Dj Mold is a China mold maker of plastic molds- injection mold, die casting moulds, plastic blow molding, rotational molding, medical plastic injection molding, two shot plastic injection molding, insert molding, overmolding, metal injection molding, micro injection molding, powder injection molding, ceramic injection molding, liquid injection molding, husky injection molding, household mold, casting mold, die mold tool, custom molds, china moulds, rapid prototyping tooling, plastic prototyping tooling, punch press tooling, die and tooling for mobile/ cell phone parts, automotive parts, vacuum cleaners, rechargeable tools, telephones, copiers, computers, multimedia speakers, and many other electronic products and household appliances. And also a plastic product manufacturer, mold manufacturer China– plastic parts, plastic water tank, plastic balls, plastic containers, plastic buckle, plastic anchor, plastic hanger, plastic spoon, plastic pipe fitting, plastic tumble, plastic tableware, plastic cups, plastic bottles, plastic tray, plastic cosmetic container, plastic case, plastic food container, plastic chairs, plastic caps, plastic cap closure, plastic tubes, plastic water pipes, plastic knobs, plastic tubing, plastic utility boxes, plastic racks and so on.
Person: James Yuan
Company: Huizhou Dj Molding Company Limited
Add: LongGang Village,LongXi Town,BoLuo County,HuiZhou City,GuangDong Province, China
Email: [email protected]