Drylam PRO-LAM PL1200-HP - Manual (Page 31)

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Failure to turn off the fans while the laminator is in an idle state will result in abnormal roller cooling,
especially on the bottom roller. This may show as cold spots (foggy areas perpendicular to the film path)
or failure of bottom lamination.
To remedy this either
I. Allow the rollers to stabilize by gaping the rollers and leaving them undisturbed in this position for
5-15 min (with fans off)
II. In extreme cases shut down the laminator (see shutdown, page 58) and allow the machine to cool to
room temperature and then reheat.
III. In minor cases, the rollers may be stabilized by very slowly running film through until the cloudy
spots disappear. This however, may not be an economical solution.
Gap Control Lever
The roller gap control is located on the right-hand side of your laminator. Its primary purpose is to allow
the rollers to "relax" while the laminator is not in use. The rollers may be gaped or closed by rotating the
gap control lever clockwise. Don't panic if the lever comes off in your hand--you just forgot and rotated it
counterclockwise.
The gap control lever is also useful in clearing jams and wraps. When gaped, you can rotate the upper
rollers by hand. Please be careful, as the front rollers are very hot.
The rollers must be in the closed position for successful lamination (encapsulation) to occur.
Please keep the rollers in the gapped position when the machine is not in use.
By gaping the rollers, you will increase their service life as well as insuring superior laminations. If left in
the closed position for extended periods, especially when hot, you
A. Run the risk of "flat-spotting" them. This phenomenon can result in narrow bands running from
one side of the laminate to the other during every revolution of the roller.
B. Cause heat build up at the nip while the laminator is idle with the rollers heated
To ensure a quality lamination it is important that the rollers remain gapped during warm up or while the
rollers are stationary for an extended period. Failure to do so will result in hot areas on the film
perpendicular to the rollers. To remedy this you need to allow the rollers to stabilize. It is much easier to
stabilize hot spots than it is to stabilize a cooled roller. Simply allow the laminate to run through the
laminator very slowly for a few revolutions of the roller or until the hot spots disappear.