Thermoforming
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Uneven Thickness of PBT Extruded Sheet
Problem Phenomenon
The transverse thickness of the PBT extruded sheet fluctuates, affecting subsequent stamping or '2079851475616104458.
Cause Analysis
The die lip gap is uneven; the melt temperature distribution is uneven and the viscosity differs; the three-roll gaps are not parallel.
Solution
Precisely adjust the die lip gap; optimize the barrel temperature uniformity; calibrate the three-roll gap.
Key Takeaway
The thickness uniformity of PBT sheet is the basis for subsequent processing.
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