1948 siegwerk newsletter gb · nets (such as our sophisticated raw materi-al introduction process...
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Siegwerk Druckfarben AG & Co. KGaA ∙ Alfred-Keller-Str. 55 ∙ 53721 Siegburg ∙ Germany ∙ Phone: +49 (0) 2241 304-0 ∙ [email protected] ∙ www.siegwerk.com
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FLEXIBLE PACKAGINGNews for Flexible Packaging ∙ EMEA Edition
December 2014 ∙ Issue 01
Sometimes, only the most exclusive design
is appropriate. This applies to flexible pack-
aging that creates showcase for the prod-
uct to be sold. When high-class branding is
the goal, HD flexo printing facilitates excel-
lent print results.
The benefits are manifold: color contrast,
brilliant images, consistency in printing
process etc. The process achieves a high-
er printing quality than conventional flexo
printing, basically similar to gravure print-
ing, making it a viable alternative.
With regards to ink, several factors con-
tribute to the quality of HD flexo printed
packaging. The particular focus here is on
an exceptional half tone printing. The in-
creased quality is a result of various factors:
high resolution printing plates, very fine,
low volume anilox rollers and specially ad-
justed printing inks.
The amount of transferred ink is reduced
and consequently the ink film becomes
thinner but nevertheless achieving high col-
or strength. To establish the process reliably
Siegwerk supports customers with exten-
sive guidance. Some parameters need to be
met, in order to create good preconditions
for an excellent ink for flexo printing. For
example, adjusting drying speed to avoid
drying on the anilox or the printing plate
is crucial. Even over long print runs the ink
stability needs to be very high to ensure
clean and uniform printing. In most cases,
Siegwerk can adjust the conventional flexo
printing inks to meet the increased HD flexo
printing requirements, usually for process
colors.
In television technology, at first it was a lux-
ury feature. By now, HDTV is the acknowl-
edged industry standard. HD Flexo printing
is able to compete with the visual quality
of gravure and offset printing. Siegwerk is
well-equipped for this evolution.
Welcome to Siegwerk News! Creating this new channel, we asked ourselves: what
should be in it for you? We would like to keep you posted on what you can expect from
us – today and in the future. In a nutshell, that includes three main areas we engage
in on a daily basis: technology guidance and support, ink performance, and product
safety. After all, by understanding and overseeing major parts of the packaging pro-
cess and by thinking beyond the ink, we contribute to more efficient processes, higher
quality and food safety for our customers. One more thing: since this is a new platform,
we would be happy to receive your feedback. What do you like? What do you think is
missing? Please email us your thoughts. Enjoy reading the first edition!
Sincerely, Coen Vinke
DEAR BUSINESS PARTNERS,
HD FLEXO INK: THE DEFINITION OF QUALITY
Coen Vinke, Vice President BU
Flexible Packaging
HD flexo printed packaging
We all know it from our television at home: High-Definition (HD) is more
than just nice to have. The same applies for HD flexo printing. But to
meet the highest standards, this printing process is reliant on appropriate ink.
Siegwerk Druckfarben AG & Co. KGaA ∙ Alfred-Keller-Str. 55 ∙ 53721 Siegburg ∙ Germany ∙ Phone: +49 (0) 2241 304-0 ∙ [email protected] ∙ www.siegwerk.com
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FLEXIBLE PACKAGINGNews for Flexible Packaging ∙ EMEA Edition
COMPREHENSIVE PRODUCT SAFETY
Do all good things come in threes? That is
not quite enough, when it comes to prod-
uct safety at Siegwerk. In this case, the
magic number is four:
• Safe products
• Systematic processes
• Product safety guidance
• Proactive safety work
From understanding and controlling migra-
tion mechanisms via various internal safety
nets (such as our sophisticated raw materi-
al introduction process and global formu-
lation guidelines) and facilitating extensive
know-how sharing all the way to support-
ing legislative procedures.
This newsletter will introduce one of
the four categories of product safety at
Siegwerk in each upcoming issue, respec-
tively.
SOLVING PROBLEMS PART 1: GHOSTINGDEVELOP
ANDOPTIMIZE
If in flexo printing, after a printing
and packaging process, it occurs that
a weak printed image is visible in one
part of the motif where it should not
be, the technical term is ”ghosting ef-
fect”. It oftentimes crops up in the case
of a solid print with negative fonts or
with windows. There are various caus-
es for this problem, with different solu-
tions (see chart below).
We feel that offering a mere product is
not enough. Thus, we have made the
strategic decision to guide customers to
optimize functionality and the efficiency
of their print jobs rather than selling ink.
Based on decades of experience, Siegwerk
places great value on developing and op-
timizing solutions and customers' prod-
uct portfolios. The company engages in a
broad range of activities to help partners
creating more efficient processes, attrac-
tive designs and improve packaging func-
tionality. Precisely analyzing customers’ re-
quirements and assessing the best solution
contributes to innovative packaging ideas
and gives expert insight in considering
cost-performance ratios. In this regard, the
ink itself adds to higher efficiency in both
the print and the packaging process. Being
at the interaction of substrates, inks, and
adhesives, Siegwerk enables this by devel-
oping specific formulations and optimizing
ink portfolios for particular market require-
ments. Oftentimes, this includes a portfolio
simplification leading to fewer downtimes,
improved stock level, and, all in all, a com-
mercially and technically best fit for use ink
portfolio.
Withouterror
Witherror
Ghosting: Cause and Remedy
■ PACKAGING DEVELOPMENT SUPPORT We rethink packaging performance.
■ INK DEVELOPMENT AND PERFORMANCE OPTIMIZATION
We formulate high-performing ink solutions.
■ INK PORTFOLIO SIMPLIFICATION
We reduce your ink portfolio complexity.
Increase the pressure in the chamber doctor blade system.
The anilox roller cells are inadequately filled.
Add retarder to the ink.
The ink dries in the anilox roller cells.
Use an anilox roller with a higher transferred volume.
The amount of ink available is too small, as the transferred vol-ume of the anilox roller is too low.
Increase the print-ing speed or the viscosity of the ink.
The printing speed is too low.
Product safety is key
for food packaging
Please contact your account management team for more information.