Paper
grades
Most types of paper and board can be film
laminated if they are supplied flat but the
best results are always achieved on smooth
gloss or satin coated materials. Uncoated
sheets and the rougher matt coated grades
can be problematical in some circumstances.
U.V.
varnishing is more demanding of paper quality
than lamination. Smooth coated papers,
which also have high holdout to prevent
absorption of the varnish, are required to
produce acceptable
glossy results. This is particularly true
of rollercoat U.V. varnishing.
If you have
any doubts about the suitability of your
chosen substrate, simply supply
us with a few samples and we will be
happy to
produce proofs for you.
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Paper shape
All printed sheets should be supplied flat
and well protected from the elements. Tight
or wavy edges caused by moisture loss or
gain after printing or in transit can make
it impossible to process the sheets due to
creasing as they pass through our lamination
or varnishing nips.
This requirement is crucial
if we are required to spot varnish to a
tight register on large
sheets of a lighter weight stock. For similar
reasons spot varnishing of lighter weight
HSWO work is rarely satisfactory due
to the shape problems that are inevitable
following this process.
Sheets laminated
on one side become sensitive to curling
if exposed to extremes of humidity.
This is because the film is stable and
does not expand or contract in the same
manner
as paper when moisture is gained or lost.
Recommendations
Paper choice is critical in achieving the
best results in both lamination and varnishing.
If there is any doubt in a papers suitability
please arrange a proof with us. Usually 2-3
A4 sheets are sufficient to provide a good
idea of acceptability.
Please protect pallets
in transit to us with stretch film and
ensure that they are properly
secured.
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