Owner`s manual

Section 4. Troubleshooting
19
The following table lists problems that may occur when using the SW-4000 Liquid
Laminator. Recommended corrective actions are provided for all commonly
encountered problems.
Problem / Symptom Causes Corrective Action
Very thin coating Sealant is diluted with water Remove old coating and refill
with new
Heavy coating Weight of coating in application
area causes material to sag
and not get wiped off properly
Increase break tension on the
Transition and Tension Idlers
Dirty Draw Down Bar Clean the Draw Down Bar
Overly thinned coating can dry
quickly and streak
Remove old coating and refill
with new
Streaked finish
Contaminated coating can
clump up and streak
Remove old coating and refill
with new
Media has been overheated Cool down heaters or speed
up drive
Roll-feed to take-up alignment
is poor
Realign the media
Media wrinkles
Insufficient back-tension Increase brake tension on
Transition and Tension Idlers
Telescoping media Roll-feed to take-up alignment
is poor
Realign the media
Coated Media is wet
coming out of the dryer
panel
Insufficient drying
• Check the web
Temperature with IR gun
66 – 82°C (150 –180
o
F)
• Reduce web speed
• Increase the heat panel
temperature
Media surface is contaminated Ensure media is free form
contaminates
Sealant is contaminated Remove old coating and refill
with new
Non-wets (areas where the
sealant has not adhered to
the film or paper)
Media or inks and sealant are
incompatible
Use a compatible media
Media is too hot and is
beginning to melt
Cool down the heaters and/or
speed up the drive
Distortions in media
Media is hot and back tension
is too high
Decrease back tension