SUCCESS STORIES
Strength Within the System FreiLacke is the only company to supply both powder coatings and wet
associated wet coating, virtually eliminating any visible differences”. The
coatings in a combined system to the advanced TrainLab.
new product combination practically tested on the advanced TrainLab uses the ‘DW11’ wet coating system and the ‘PU6’ powder coating.
T
he final section of the advanced TrainLab – a middle carriage – has
Essentially, the system encompasses a water-based 2C polyurethane
been given a new decorative look and corrosion protection. This
coating and a polyurethane powder coating, which are highly resistant to
carriage is particularly special because one company, namely FreiLacke,
graffiti removal agents and other acids and alkaline cleaners. The
supplied both wet and powder coatings from a single source. “This is our
water-based coating offers another clear advantage: In the colouring
Unique Selling Proposition within the project,” stated Dr. Hilmar Weisse,
layer, the filler and base coat are combined in a single coating as base
Business Manager of Mobility Systems at FreiLacke. “As a coating systems
fillers. Using this base-filler coating dispenses with one of the coating
manufacturer we were able to carefully coordinate both coatings during
stages, resulting in shorter turnaround times. In addition, after a short
product development and production”. In the case of the powder coating
airing period of around an hour at room temperature, each coating
primer ‘Freopox PB6904’ and the PU powder coating top coat ‘PU6’ used
layer of the combi-system is ready for wet-on-wet coating. As a result,
in the current project, the respective authorisations were only recently
the three-coat coating system can be cross-linked over night at room
granted by Deutsche Bahn AG. Job coater Wobek Oberflächenschutz
temperature. However, should even quicker completion be required, the
GmbH from Stollberg, in the Ore Mountains, applied the coatings to the
coating can also be force-dried.
side flaps of the advanced TrainLab, which had been dismantled from the
“During product development we constantly kept the coating process
vehicle body for that purpose. Firstly, the flaps were chemically stripped
in mind,” explained Weisse. “Not only with regard to original coatings,
and then prepared for coating using a laser process.
but also in relation to repairs. Consequently, grinding our base-filler
However, for FreiLacke, the primary objective is to use the practical tests
coating will not alter the colour. The coating system can also be quickly
to become a full-service provider to the rail transport industry. “One of the
cross-linked without long waiting periods or the need for forced drying.
aspects for which our products are noted is their exceptional chemical
Particularly where remedial work is required, this saves both time and
resistance. The high gloss requirements imposed by DB are also ideally
energy.”
met by the powder and wet coatings,” explained Weisse. “Moreover, the innovative powder coating process is perfectly coordinated with the
Th The T h he pr priim ime m d fl flap ap p is pr prepa epa p rred d fo for or to op p co coa oa o a atin t g. tin g Pow wder de co coat ating at go on n the tth he h flaps apss is per perfec ectly ectly ly y co oor ord rrd dina nated ed d wi with th h tthe th h he e we wet coati wet oa oat atin in ing ng sy yste te em p prop ro rrop op pert ert er rties ie es. es
© FreiLacke
12
N.34 - 2020 JUNE - ipcm® Protective Coatings
For further information: www.freilacke.de