Molds & Tooling
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Insufficient vent groove design affects product surface and filling
Problem Phenomenon
Insufficient vent groove design affects product surface and filling
Cause Analysis
Vent groove depth too shallow (<0.02mm), poor venting
Vent groove position improper, not at the melt convergence point
Insufficient number of vent grooves
Vent grooves blocked with deposits
Insufficient parting line venting area
Solution
Vent groove depth 0.02-0.04mm
Vent grooves set at melt convergence points and ends
Increase the number of vent grooves
Regularly clean vent grooves
Increase parting line venting area
Key Takeaway
Venting requires reasonable vent groove setting and regular cleaning
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