Molds & Tooling
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Obvious Gate Marks on PCTG Products
Problem Phenomenon
Raised or depressed marks are left at the gate break point.
Cause Analysis
The gate design is improper (the submarine gate angle is large or the side gate is too thick), and the breakage during demolding is not ideal.
Solution
Optimize the gate design (needle valve gate or pin-point gate); adjust the demolding sequence and speed.
Key Takeaway
PCTG gate marks are an appearance quality control point.
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