When the "IPA-free Package" is launched this summer, Heidelberger
Druckmaschinen AG (Heidelberg) will be the only manufacturer to
offer a fully comprehensive solution for alcohol-free printing. The
package incorporates coordinated machine components, consultancy
services, and Saphira consumables. New additions include special
dampening rollers with modified surface materials and structures
and an extended range of features in the new CombiStar Pro. The
package is rounded off by special Saphira dampening solution
additives and comprehensive consulting services and will initially
be available for the Speedmaster XL 105, SM/CD/CX 102, and XL 75
series for use with conventional inks. Previously installed presses
from these series can be upgraded. The solution will be available
for other models and for UV print applications by drupa 2012.
For many years, print shops have been searching for ways to
reduce the amount of isopropyl alcohol (IPA) used in their
operations, a trend that has been boosted by a growing awareness of
how this substance impacts on the environment, human health, and
the climate in the pressroom. IPA plays an important role in offset
printing - it reduces the surface tension of dampening solution,
ensures better wetting of rollers and printing plates, and
stabilizes the ink-water balance. However, the alcohol evaporates
completely into the pressroom and can lead to health complaints for
printers such as headaches, dizziness, and eye irritation. IPA is
highly flammable and contributes to the formation of ground-level
ozone, which is also known as summer smog. Furthermore, IPA is an
extra cost factor that is exacerbated by statutory requirements,
which vary from country to country. "We want the IPA-free Package
to make it easier for our customers to switch to alcohol-free
printing and to show that environmentally friendly solutions can
also be cost-effective," explains Stephan Plenz, Member of the
Management Board responsible for Heidelberg Equipment. There is
already very strong interest for this type of solution in Europe,
but demand is also growing among customers in Asia and Africa.
New dampening rollers, improved measuring technology, and
alcohol substitutes ensure maximum quality
In order for alcohol-free printing to work, water quality
must be consistent and exhibit an overall hardness of between
8°dH and 12°dH. If hardness fluctuates, the water needs
to be treated, for example in a reverse osmosis plant. The new
dampening rollers ensure that a sufficient quantity of dampening
solution is very evenly distributed over the printing plate,
thereby achieving a steady ink-water balance. The CombiStar Pro
peripheral unit is equipped with "Digidos" digital metering
technology for dampening solution additives, which achieves an
extremely precise metering accuracy of plus/minus 0.1 percent.
Integrated into CombiStar Pro is FilterStar with improved
components for dampening solution micro filtration, which
significantly extends the useful life of the dampening solution.
The Prinect Press Center control station gives the printer an
overview of dampening solution quality, with developments in
temperature, conductivity, and pH value displayed in real time. The
CombiStar Pro also shows consumption levels for water, IPA, and
dampening solution additive. Low concentrations of IPA may be
necessary when printing special colors and spot colors or when
using non-absorbent substrates. In such cases, it is advisable to
use the optional Alcosmart measuring and metering system.
The experts from Heidelberg worked closely with European
customers over several months to test a broad range of alcohol
substitutes. The most suitable turned out to be an additive based
on glycols. Heidelberg offers IPA substitutes such as these in its
Saphira range, which is specifically geared towards the various
requirements of commercial and packaging printing. These
substitutes are much more cost-effective and also improve print
quality, with colors appearing far more vibrant.
Another important part of the "IPA-free Package" is the
provision of specialist consulting during startup. This includes
the pulling of a specially developed dampening test form for
determining the best setting for the roller frame and dampening
solution. The quality of process water and dampening solution is
also analyzed and press color and dampening profiles are adjusted
accordingly.
Bastian Druck, which is based near Trier, southwest Germany,
is one example of a print shop that has switched over production on
both its Speedmaster XL 105 presses to zero percent IPA. "We set
ourselves up as a climate-neutral print shop and are constantly
striving to go one step further, not just for our own sake, but
because we feel it is our responsibility to do so for our
environmentally conscious customers. But words need to be backed up
by deeds. Alcohol-free offset printing was clearly the next step,"
explains Gerrit Schneider, production manager at Bastian Druck.
"There are no limitations and we are now printing commercial work,
packaging, and labels with far more gloss and color fidelity," says
Schneider. By eliminating the use of alcohol, Bastian Druck is not
only helping to save the environment, but also save thousands of
euros a year.
www.bastiandruck.de
Figure 1:
As part of the IPA-free Package, Heidelberg is using new
dampening rollers that distribute a sufficient amount of dampening
solution very evenly over the printing plate, thereby ensuring an
optimum ink-water balance.
Figure 2:
Heidelberg offers IPA substitutes for alcohol-free
printing in its Saphira range, which is specifically geared towards
the various requirements of commercial and packaging printing.
Images and further information about Heidelberger
Druckmaschinen AG is available from the Press Lounge at:
www.heidelberg.com.
For further information, please contact:
Heidelberger Druckmaschinen AG
Corporate Public Relations
Hilde Weisser
Phone: +49 (0)6221 92 5066
Fax: +49 (0)6221 92 5069
E-mail:
hilde.weisser@heidelberg.com