Processing Machinery
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PP Welding and Joining
Fenómeno del problema
【Problem Phenomenon】PP parts need welding assembly, process selection evaluation
Análisis de la causa
PP can be hot plate welded, vibration welded, ultrasonic welded, and heat staked; welding of crystalline materials requires controlling temperature and pressure; solvent bonding is difficult; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solución
Select hot plate or vibration welding according to structure; optimize ultrasonic welding parameters; avoid solvent bonding; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Conclusión clave
PP welding selects hot plate and vibration welding, solvent bonding is difficult; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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