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CN3600 Setup & Operation Manual Revision : 6/2020
56
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IMPORTANT NOTE: : Condition of the log roll will affect quality of slit rolls.
Read the page headed “Principles of Single Knife Slitting”.
SLITTING PROBLEMS - double sided foam mounting tapes
PROBLEM/EFFECT
CAUSE
REMEDIES
Sticky
edges
and
generally poor quality
appearance
•
Knife angle
unsuitable
•
Experiment with driving the knife
keeping the RPM lower and also a
lower Chuck/mandrel speed. When
driving the knife ensure that the chuck &
knife are in the same direction. Do not
allow the knife to overheat. An
indication of too much heat is the slit roll
will have sticky sides. In this case lower
knife RPM or switch off the knife drive
and allow the knife to rotate freely.
•
CAUTION
: With large diameter knives
(400mm [16”] and above) it is
recommended you do not set Knife
RPM below 80 to avoid overloading
knife drive
•
Lubricant Sprays not
centralized.
•
Angle sprays at the knife bevel in such
a way that the overspray is directed
towards the centre of the knife.
•
Leading edge of
material facing
wrong way.
•
Flap or leading edge of foam must face
away from the operator.
•
Chuck/knife running
in opposite
directions.
•
Run the chuck/knife in same direction.
Slit
rolls
have
a
stepped appearance
•
Liner has moved off
tape.
•
Warm tape prior to slitting in
temperature controlled cabinet.
Double
cutting
on
plastic liner.
•
Knife edge too
sharp.
•
Round off cutting edge of knife.