Grippers
need to be adjusted or replaced. Lay a piece of clear
tape over the perf. Possibly apply a silicone spray
to the rule teeth.
Perf is not perforating as desired
Add
pressure or change rule to a special high product.
Perf is slitting instead of perforating the paper
Reduce
pressure, try changing to a special low product, or
overlay the rule with a piece of clear film tape.
Rule is not perforating at all
Use
a good hard 3- to 4-ply non-compressible blanket. Check
the pressure. Reverse or use back side of blanket if
possible. Does this particular press have springloaded
cylinders designed to release under pressure as a safety
precaution?
Teeth are bending or breaking off
Reduce pressure and make sure the correct height of perf for the stock is being used.
Perforation is straying from guidelines
Reduce
pressure. Try using a 1/2” to 3/4” masking
tape to overlay the perf (especially in high-speed web
operations that generate heat).
Indentation
or shoulder mark in paper is
appearing adjacent to the perforated line
Back
off the pressure. Try a center-mounted rule to distribute
pressure evenly to both sides of rule.
None of the above
Call
our toll-free number:1-800-537-2514
for
experienced technical assistance.
