Polymer film for in-mold labeling
OwnerKatja Weis, Yvonne Düpre +1inventors
InventorsKatja Weis, Yvonne Düpre, Sandra Schmidt
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Abstract
The invention relates to an opaque multilayer biaxially oriented polypropylene film comprising at least one vacuole-containing base layer and a printable outer cover layer and an inner matte cover layer, the inner cover layer containing at least two incompatible polymers and having a surface roughness Rz of at least 2.0 μm at a cut-off of 25 μm. The inner matte cover layer contains a polydialkylsiloxane having a viscosity of 100,000 to 500,000 mm2/s and the surface of this inner cover layer is surface treated by means of corona or the inner cover layer contains a siloxane-modified polyolefin.
Claims14
An opaque multilayer biaxially oriented polypropylene film comprising at least one vacuole-containing base layer and a printable outer cover layer and an inner matte cover layer, the inner cover layer containing at least two incompatible polymers and having a surface roughness Rz of at least 2.0 μm at a cut-off of 25 μm, characterized in that the inner matte cover layer contains a polydialkylsiloxane which has a viscosity of 100,000 to 500,000 mm2/s and the surface of this inner cover layer is surface treated by means of corona treated or the inner cover layer contains a siloxane-modified polyolefin.
Dependencies are inferred from the claim text.