https://www.avient.com/resource-center/knowledge-base/article/designing-molds-styrenic-block-copolymers-sbc?rtype%5B0%5D=1164
To make sure the degating process does not pull a hole in the part, the cross sectional size of the gate should be between 1/10 and 1/4 the thickness of the part wall section where the gate is located.