Extrusion & Post
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PTFE Large Product Limitations
Problem Phenomenon
PTFE ultra-large products are difficult to compression mold, with uneven force and temperature, and unstable performance.
Cause Analysis
Mold size and pressing equipment capability limitations; pipes and containers several meters in diameter are difficult to compression mold; large products have uneven force and temperature during pressing and sintering; winding molding is an alternative solution.
Solution
①Evaluate alternative processes such as winding molding for ultra-large products; ②Segmented manufacturing and combination; ③Dedicated large equipment investment; ④Process verification covering size effects.; After adjustment, continuously sample to verify the effect, confirm stability before resuming mass production
Key Takeaway
PTFE large products must break through compression molding thinking; processes such as winding expand boundaries; size effects need special verification.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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