Heat transfer films for the dry coating of surfaces
AssigneesBASF SE, LS Industrielacke GmbH
InventorsManfred Biehler, Dieter Litzcke
Life of this patent
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Abstract
A heat transfer film having a) a carrier film, b) at least one coating layer arranged directly on the carrier film, and c) at least one hot-sealable polymer adhesive layer is disclosed. The coating layer is based on a non-aqueous, radiation-curable, liquid composition which contains at least 60 wt %, based on the total weight of the composition, of curable constituents selected from organic oligomers which have ethylenically unsaturated double bonds. Use of the heat transfer films for the dry coating of surfaces, production of such heat transfer films, and methods for coating or lacquering surfaces of objects using the heat transfer films are also disclosed.
Claims18
A thermal transfer foil (1) comprising:
- a) a backing foil (2),
- b) at least one layer (3) of coating material arranged on the backing foil (2),
- c) at least one heat-sealable, polymeric adhesive layer (4),
- where the layer of coating material is based on a non-aqueous, radiation-curable, liquid composition which comprises at least 60% by weight, based on the total weight of the composition, of curable constituents selected from organic oligomers which have ethylenically unsaturated double bonds and mixtures of said oligomers with monomers which have at least one ethylenically unsaturated double bond,
- and where the heat-sealable polymeric adhesive layer (4) is based on at least two aqueous polymer dispersions, where at least one polymer dispersion comprises a UV-radiation-curable polymer in dispersed form, and where at least one other polymer dispersion comprises a self-crosslinking polymer in dispersed form.
Dependencies are inferred from the claim text.