Molds & Tooling
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PEEK Compression Molding Demolding Difficulty
Problem Phenomenon
【Problem Phenomenon】PEEK compression molded parts stick to the mold and are difficult to demold, with surface scratches
Cause Analysis
PEEK's adhesion to the mold and shrinkage gripping make the demolding force large; Victrex recommends blending 2-3% PTFE lubricant-grade powder to improve demolding; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Blend 2-3% PTFE lubricant powder into the material to aid demolding; polish the mold cavity and apply high-temperature release agent; optimize demolding temperature and tooling design; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
Compression molding demolding relies on the dual means of PTFE internal lubrication plus mold surface treatment; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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