IMPAS 4 2 Shrinkage Product Sticking Cavity

In injection molding, Product may sticking cavity, first consideration, if injection pressure or holding pressure is too high. Higher shooting pressure will caused excessive saturated, plastic filling into other gaps, cause product stuck in the cavity, stripping out difficulties.

When the barrel temperature is too high, it is usually the existence of two phenomena. First, the temperature is too high by the decomposition of plastic deterioration, loss of its original features; and occurs in the process of stripping broken or torn, resulting in cavity sticky. Second, the compound after filling into the cavity is not easy to cool, take longer cycle time, not cost-effective, so be moderate according to the characteristics of the compound to adjust its operating temperature, regarding to mold aspect, if the imbalance in the inlet, would easily have stick mode when the openning, then we should make improvements for the mold, the table is finished stick mode possible causes and treatment strategies:

Table IV

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