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https://www.avient.com/knowledge-base/article/designing-molds-styrenic-block-copolymers-sbc?rtype[]=1164
SBC based TPEs with high mold shrinkage may exhibit sinks and shrink voids in tools with large variations in wall section thickness.
In parts that fill from a thin wall to a thick section, the polymer may break away from the wall as it enters the thick section.
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.
https://www.avient.com/knowledge-base/article/designing-molds-styrenic-block-copolymers-sbc
SBC based TPEs with high mold shrinkage may exhibit sinks and shrink voids in tools with large variations in wall section thickness.
In parts that fill from a thin wall to a thick section, the polymer may break away from the wall as it enters the thick section.
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.
https://www.avient.com/sites/default/files/2024-06/SEM Asia Product Selection Guide.pdf
Avient makes no representations, guarantees, or warranties of any kind with respect to the information contained in this document about its accuracy, suitability
for particular applications, or the results obtained or obtainable using the information.
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https://www.avient.com/knowledge-base/article/injection-molding-troubleshooting?rtype[]=1164
Filling from thin to thick sections.
Uneven filling of section.
Reduce wall section.
https://www.avient.com/knowledge-base/article/injection-molding-troubleshooting
Filling from thin to thick sections.
Uneven filling of section.
Reduce wall section.