1. The exhaust performance requirements of the mold. Due to the shorter filling time and faster injection speed of thin-walled injection molding compared to ordinary injection molding, in order to prevent ignition of trapped gas, thin-walled injection molding places higher requirements on the exhaust performance of the mold.
2. Ensure the balance of the pouring system. Due to the high requirements for gates in forming thin-walled plastic parts, large gates must be used, and the thickness of the gates must be greater than the wall thickness. For this reason, thin-walled injection molds often use a runner free pouring system.
3. Requirements for stiffness, strength, and wear resistance of the mold. Thin wall injection molding requires high injection pressure, therefore, the stiffness and strength of the thin-walled injection mold should be high, and the pressure bearing capacity should be good. Thin walled injection molds often use thicker templates and more support columns.
4. The cooling of the mold should be uniform. Compared with ordinary plastic parts, thin-walled injection molded plastic parts have lower tolerance to residual stress and often suffer from warping and deformation. Therefore, it is necessary to strengthen the cooling of the mold to ensure the dimensional stability of the plastic parts.
5. Balance requirements for the ejection system. Due to the thinner wall thickness and ribs of thin-walled plastic parts compared to ordinary plastic parts, which are more prone to damage, there are higher requirements for the ejection system during the ejection process, and the ejection force needs to achieve better balance.
