Injection Molding
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Extremely high melt viscosity of FEP makes mold filling difficult
Problem Phenomenon
FEP '2079851475616104452 filling is difficult (especially for thin-walled parts)
Cause Analysis
FEP has an extremely low melt index (typical value MFR 2-30 g/10min), and its melt viscosity is much higher than that of general thermoplastics
Solution
Increase the injection temperature and injection pressure (the mold needs to withstand high pressure); raise the mold temperature to above 200°C
Key Takeaway
The high melt viscosity of FEP is the main difficulty in processing
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