Thermoforming
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LCP Processing Temperature Window and Melt Control
Problem Phenomenon
【Problem Phenomenon】When the temperature is set too low, filling is difficult; when too high, products yellow and blister; the process window is hard to grasp
Cause Analysis
LCP is a thermotropic liquid crystal polymer, and the melt temperature generally needs to be 280-330℃; below the melting point fluidity drops sharply, and above the upper limit it degrades rapidly; MEMS textbooks and resin suppliers both give this temperature range
Solution
Set each barrel zone temperature according to the grade data sheet and calibrate with actual melt temperature measurement; control the melt temperature within the 280-330℃ window and avoid long-term operation at the upper limit; lower the temperature during shutdown to prevent idle degradation
Key Takeaway
LCP melt temperature must be calibrated by actual measurement; within the 280-330℃ window, prefer the middle-to-lower limit; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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