Molds & Tooling
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Orange Peel on the Surface of PBT Products
Problem Phenomenon
Orange-peel-like texture appears on the product surface, which is not smooth.
Cause Analysis
The mold surface is rough or worn; the melt temperature is too low and the replication is poor; the mold temperature is low, and rapid cooling forms a rough surface layer.
Solution
Polish the mold to Ra≤0.1μm; increase the melt temperature and mold temperature; increase the injection pressure.
Key Takeaway
PBT surface orange peel is mainly a mold and process problem.
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