Material Drying
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PETG ultrasonic welding insufficient strength
Problem Phenomenon
After ultrasonic welding of PETG products, the welding strength is low and they easily separate at the weld.
Cause Analysis
Ultrasonic welding parameters improper (amplitude, pressure, time not suitable), welding surface design poor, product moisture absorption affects welding.
Solution
Optimize welding parameters (amplitude 60-80%, pressure 0.2-0.4MPa); optimize energy director design; dry the products before welding.
Key Takeaway
PETG ultrasonic welding requires optimized welding parameters and joint design.
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