Globally the demand
for ecologically optimised
products is growing.
Brand owners are
responding by intensified
efforts to not only
optimise their products,
but also the packaging
and other print products
with respect to
sustainability. In order to
document the
achievements in
protecting environment
and resources, a growing
number of print products
are nowadays awarded
with eco-labels from
governmental and nongovernmental
organisations.
Some eco-labels require a waiver to use certain substances in the production process. Use of cobalt compounds, which promote oxidative drying of printing inks as a catalyst, are generally regarded critically in the award criteria.
On account of this, ink manufacturer hubergroup was among the first to develop a cobalt-free siccative system for oxidatively drying sheetfed inks. Those cobalt-free inks have been supplied as an alternative and characteristics, colour distances and printability of these inks remain unchanged. Due to less increase in pile-temperature during the oxidative drying phase, the drying performance has even improved with the new siccative system, showing a clear optimization with regard to drying kinetics.
Some of the inks supplied by hubergroup in this category are:
QUICKFAST COFREE, very fast drying sheet-fed offset process series with high resistance to mechanical stress, for printing on a wide variety of critical substrates. These process inks are particularly suitable for jobs on sensitive, absorbent substrates. For printing on film and other non- or poorabsorbent substrates, a pretest under production conditions needs to be successfully performed.
MAXXIMA COFREE is the universal, duct fresh sheetfed offset process series. Highly transparent and pure pigments enable a low tonal value spread between the four process colours, supporting a neutral grey balance in the entire tonal range. This is suitable for printing on absorbent substrates and ideal process ink series for printers who want to cover a wide range of applications with only one ink series. This publication printing ink series contains mineral oil and is not recommended to be used in packaging printing.
The RAPIDA COFREE is similar to the Maxima series especially capable for highspeed printing on straight presses.
RESISTA COFREE process inks are particularly suitable for jobs on coated papers that demand the best possible degree of rub resistance from the inks used. Also on all other types of absorbent substrates, it creates excellent results. This printing ink series is again not recommended for the manufacture of food packaging.
The REFLECTA COFREE is the duct fresh, high-gloss sheet-fed offset process series. It is particularly suitable for exceedingly high-gloss print jobs on coated and on other absorbent substrates. It is the favourite choice for printing on 8- and 10-colour perfecting presses. REFLECTA COFREE is also especially qualified for printing laser-printable forms and sheets and also not recommended for manufacture of food packaging
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