You need enough ejection force to overcome the shrinkage friction (approx. 10% of clamping force). Increase pin diameter if the plastic is soft (TPU, silicone).
Molded-in textures (like leather grain) require 1 additional degree per 0.001" of texture depth.
You need enough ejection force to overcome the shrinkage friction (approx. 10% of clamping force). Increase pin diameter if the plastic is soft (TPU, silicone).
Molded-in textures (like leather grain) require 1 additional degree per 0.001" of texture depth. injection mold design guide