On-line production line is to combine each
processing in a certain order, so that can complete the processing of multiple
processes at one time .
Composite printing production line is a
complex of many printing processes, and its operation will be somewhat
difficult. The following points must be paid attention to in practical use:
(1) It is necessary to ensure that the
sequence between the units of the combined printing press used has enough variability
to adapt to the printing process combination required by various printed
matter. Generally, the hot stamping unit is placed at the end of the printing
unit.
(2) Must test of ink compatibility before catalog printing. Because the inks
used in different printing processes have different compositions and are not
compatible with each other, the inks used in two different systems may happen
overprint and bond;
In addition, inks are sometimes
incompatible with other post-press decorative processes such as hot stamping,
inkjet and laser lettering. Inks and other consumables are best known through
the manufacturer and suppliers of their performance.
(3) In the combination printing ink color
personnel must go through formal color training, catalog printing factories
combination and equipped with advanced color matching equipment such as
spectral type colorimeter, because the same colour using different printing ink
color matching, due to the paint making factory usually choose different base
material, this means that different ink color easily when problems occur.
(4) Set the speed of printing unit
according to printing requirements. On a combination press, the printing speed
is always limited by one of the slower presses. Of course, combination printing
is still in its infancy, and there are still many technical problems and
material problems to be explored and improved.
However, there is no doubt that with the increasing personalization and
diversification of printing, combination printing will be widely used.