Vol. 16 #2, Dec. 1989 - Start up help
When shutting down a blown or cast film system, put a 1% antioxidant concentrate into the system just before pulling the switches.
This is particularly effective in protecting coextrusion systems from cross linked gels caused by heat aging during final cooling and heating during start up.
See also:
- Mark the bubble
- Coextrusion control
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Extrusion Hints