Patent ID: 7381462

Claim:
A biaxially oriented opaque polypropylene multilayered film in the form of an in-mold label made of a base layer and at least one first intermediate layer positioned thereon and a first surface layer positioned on the first intermediate layer, characterized in that the first intermediate layer has essentially no vacuoles and the first surface layer contains at least 80 weight-percent of a propylene-ethylene copolymer, which has an ethylene content from 1.2 to <2.8 weight-percent and a propylene content of 97.2-98.8 weight-percent and a melting point in the range from 145 to 160° C. and a melting enthalpy of 80 to 110 J/g and the base layer contains vacuole-initiating fillers and has a density in the range from 0.35 to 0.6 g/cm 3 and contains no pigments and the density of the overall film is in the range from 0.4 to 0.7 g/cm 3 .