Film for the lamination of graphic media and production method thereof
AssigneeDerprosa Film, S.L.
InventorsJavier DEL BARRIO PÉREZ, Manuel LÓPEZ QUESADA
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Abstract
The invention relates to a film for the lamination of graphic media, comprising an extruded plastic film core or substrate (I) which is coated with a liquid based dispersion of aliphatic polyurethane (2) having a milky white appearance, which dispersion can contain other chemical products such as other plastic resins (binders), hardening agents (crosslinkers) and/or adhesives (primers) in order to obtain the desired degree of hardness, adhesion and soft touch.
Claims15
A film for the lamination of graphic supports comprising a substrate or nucleus of plastic film (1) of bi-oriented polypropylene manufactured by extrusion with a thickness comprised of between 5 and 150 μm, and preferably between 10 and 40 μm, to which is added by coating a water-based aliphatic polyurethane dispersion having a milky white appearance (2) characterized in that the coating, when dry, has a thickness comprised of between 0.2 and 5 μm and preferably between 1 and 3 μm, and contains between 30% and 100% solids of polyurethane solids and preferably between 70% and 95%, depending on the degree of soft touch required.
A use of a film comprising a substrate or nucleus of plastic film (1) manufactured by extrusion with thicknesses comprising between 5 and 150 μm to which is added by coating a liquid base dispersion of aliphatic polyurethane having a milky white appearance (2), wherein the coating, when dry, has a thickness of between 0.2 and 5 μm and contains between 30% and 100% solids of polyurethane solids, depending on the degree of soft touch required, in the lamination of graphic supports.
Dependencies are inferred from the claim text.