new press designs, higher press speeds are indeed setting a new challenge for
printers and mounting tape manufacturers alike. Conventional hard vinyl cheaper
tapes may have been suitable for some at lower speeds but higher press speeds
present a new set of dynamic issues that demand consistent compression and
rebound capability of the tape to last through the entire run.
Foam sticky back
materials seem to struggle at higher speeds and new elastomer cushion and
higher temp resistant adhesives appear to be able to cope better. There are
obviously a wide variety of tapes each with their own features and with the
many other variables on press it really means some due diligence on you and
your supplier’s part to try out a variety of tapes to help determine what works
best for you with each plate material that you may be using.
even plate cylinders all have a profound impact on the eventual dot gain you
will see, not forgetting the operators skill at setting the optimum pressure
between the plate to substrate, anilox to plate, blade to anilox and even
doctor roll to anilox. This evaluation all takes time, patience and
perseverance as it is rare that you will be able to get the right combination
from the outset. There is no doubt that the more experience your supplier has
the better your chance of finding what will work best for you. Do bear in mind that your prepress can have a profound impact on
also helping to minimize your doubt gain by making the necessary allowances at
the file separation and screening stage, not forgetting your anilox and ink
supplier, so you must involve all of your suppliers inside and out if you what
to achieve the best result and help you decide what is right for you.