Extrusion & Post
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PSU Film Forming
Problem Phenomenon
PSU film extrusion shows uneven thickness and optical defects; high-speed production is difficult; film applications are limited.
Cause Analysis
PSU film has high requirements for plasticization uniformity; melt viscosity affects extrusion stability; thickness control accuracy; sensitivity to optical defects.; During on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based solely on experience
Solution
①Optimize the plasticization system; ②Stabilize extrusion parameters; ③Online thickness measurement control; ④Optical inspection screening.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PSU film is a high-end application; process stability determines feasibility; online control is a necessary investment.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence
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