Water Transfer Printing

• Easy printing of complex geometries and undercuts
• In most cases no problems when decorating structured surfaces
• Possibility to obtain different effects (e.g. gloss, matt, various primers, etc.)
• UV resistant and highly abrasion-resistant coating structure provided by protective lacquer

Water transfer printing is the only coating technology that makes it possible to print an almost seamless decor on parts with very complex shapes. The method is suitable for numerous applications in orthopaedic technology (prosthetics, orthotics etc.). The effect can be altered with different primers depending on the decor. The decor is sealed with a transparent lacquer coating which provides the sheen and surface feel.

First, the desired decor is printed on to a water soluble polyvinyl alcohol (PVA) film. This PVA film is carefully laid out on a warm water surface, which makes it dissolve. A chemical activator is then applied to the decor which then floats on the water surface like an oil film. The component, pre-treated depending on material employed, is now dipped into the water from above. The film wraps itself seamlessly around the part. The resulting effect is also influenced by the primer, because the film itself does not completely cover the piece.

Requirements for the surface properties (if possible)

• Laminated bubble-free
• Not pre-painted
• Not roughened

However, if the surface requires processing prior to finishing, this may involve additional costs.

The following is an overview of the currently available standard combinations of decors and primers.