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Drylam PRO-LAM PL1200-HP User Manual

Page 75

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75

Film cont.

Stretch marks

Decrease mandrel tensions

Decrease rear rollers Pressure

Defective

film

Curl up

Decrease top mandrel tension

Increase lower mandrel tension

Turn on / off fans

Defective film

Increase rear roller pressure

Curl down

Decrease Lower mandrel tension

Increase upper Mandrel Tension

Turn off / on fans

Decrease rear roller pressure

Defective

film

Twist in film

Uneven roller pressures right to left /front to back

Unmatched film buy matched film rolls (rare)

Defective

film

Waves in film perpendicular to rollers

Turn sheet sideways, paper grain wrong

Too hot, decrease temperature

Check film alignment

Increase rear roller pressure

Incompatible paper, paper shrinking excessively

Moisture content incorrect, preheat / temper paper

Paper shrinking, preheat / temper

Moisture content incorrect, let paper stabilize

Incompatible

film

Defective

film

Waves in film at angles

Incompatible paper

To hot for paper / ink

Check film alignment

Incorrect roller pressures, decrease pressure

Incorrect mandrel tension, decrease tension

Defective Film

Waves in film perpendicular to rollers

Insufficient rear roller pressure, increase

Speed up motor

Check film alignment

Waves, small, in edge seal

Increase film thickness

Decrease paper thickness

Decrease roller pressures