Problem: | Webbing | Possible Cause: | (1) Sheet too hot (2) insufficient vacuum (3) Sharp corners on deep draw (4) Improper mould layout (5) Vacuum rate too fast | Suggested Course of Action: | - Decrease heating cycle time
- Decrease heater temperature
- Check vacuum system for leaks
- Check for clogged vacuum holes
- Increase number of vacuum holes
- Check for proper location of vacuum holes
- Increase size of vacuum holes
- Increase radius
- Increase spacing between moulds
- Use smaller vacuum holes/restrict main vacuum lines
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