How to improve the miniature problem of washing machine mold surface

Depression, also known as sink marks, shrinkage, etc., refers to the uneven surface of the product, which produces shallow pits or dimples inward. During the cooling process of the Washing Machine Injection Mould，because the outer layer is close to the cavity, it is cooled and solidified first, while the inside is cooled and solidified. , During the curing process of the product, the shrinkage of the inside and outside is inconsistent, resulting in deformation of the outer layer of the product, resulting in a depression in the outer layer. From a macro point of view, most of the depressions occur in the place where the wall thickness of the product is the thickest or where the wall thickness changes sharply. If we encounter the problem of miniature, how should we analyze and solve it?
How to improve the miniature problem of Washing Machine Injection Mould  surface
First, check the gate of Washing Machine Injection Mould . You can expand the cross-sectional area of the corresponding position to increase the flow rate and reduce the injection pressure.
Secondly, improve the exhaust system of Washing Machine Injection Mould , try to set the gate at a symmetrical place, so that the runners are evenly distributed, so that one side does not slow down and the other side is not fully injected.

Third, appropriately increase the amount of cooling water or reduce the temperature of cooling water, prolong the injection time and pressure holding time, and do not let the plastic parts of Washing Machine Injection Mould  solidify prematurely。