Film Shrinkage; Undulations In Laminate; Film Wrapped Around Rollers; 13.10 Film Squeal - usi CRL 40 Instruction Manual

Possible Solution
Remove film after use and clean machine.
13.7

Film Shrinkage

Problem: Film shrinks or narrows from its original width during lamination.
Excess tension and/or heat, especially with 1.5mil films.
Possible Solution
Reduce film tensions and if necessary reduce temperatures.
13.8

Undulations in Laminate

Problem: The finished lamination has a "wave" effect (undulations).
Possible Solution
This effect is caused through heat transfer to the rear pull rollers and the laminate not being "set"
when it leaves the machine. Usually evident when laminating long runs with no fan. Ensure the
fans are on and feel the rear pull rollers - if they are hot cease laminating and let them cool down.
13.9 Film Wrapped Around Rollers (Wrap Around)
Problem: Film has become wrapped around the rear pull rollers.
Usually occurs when loading film with imbalanced tension settings or with 38 micron films.
Possible Solution
See Section 9.10, Wrap Arounds, Page 21.

13.10 Film Squeal

Problem: High pitched squeal is emitted when laminating.
Excessive tension and/or heat will cause the film to drag across the teflon coated heat shoes emitting
a high pitched squeal.
Possible Solution
Reducing tension and/or heat will reduce this problem but some rolls of film may emit more noise
than others.
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