Frequently Asked Questions
There are a number of factors that affect the weldability of thermoplastics in the context of ultrasonic welding. The main ones are:
- Polymer structure, i.e. is it amorphous or semi-crystalline?
- Polymer chemistry
- Melting point
- Melt flow rate
Other factors that may influence weldability include:
- Mould release agents
Only available to Industrial Members of TWI: Ultrasonic welding of thermoplastics - a guide to best practice
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