Operation
4-8
Curl Cam Option
Your machine may have an option called the curl cam. This is a set of 2 idler rollers that can be
pivoted and locked into position. This option is particularly useful when the machine is running
thermal films of differing thickness. The curl cam allows the operator to form the film as it exits the
nip rolls, before it has a chance to cool on its own. If the operator is finding that the product is getting
upward curl, the curl cam should be positioned so that the film goes up over top of the leading roll and
under the exiting roll, then through the pull rolls. If the operator is finding that the product is getting
downward curl, the curl cam should be positioned so that the web goes under the leading roll and
over the exiting roll, then through the pull rolls. The amount of angle will need to be determined by
experience with the film/substrate combination.
The curl cam is adjusted by pulling one of the pins, located on both ends and rotating the head
slightly to lock the pin in the out position. Pull the second pin out and rotate the assembly to the
desired position and release pin. You may need to rotate the assembly slightly to allow pin to line up
in hole. There will be a "click" as the pin locks itself into position. Go back to the other end and
release the pin so that it locks into position as well. Be sure that the pins are in the same hole end to
end so that the assembly is not racked or twisted.
Curl Cam Correcting Upward Curl
Curl Cam correcting Downward Curl
Figure 6. Curl Cam
