Biaxially-oriented multilayer polyolefin film with a silk-matt finish, process for its preparation and use thereof

A multilayer polypropylene film comprising:

• at least one base layer comprising polypropylene, and
• at least one outer layer comprising a mixture of components I and II, wherein mixture component I is selected from the group consisting of
• a propylene homopolymer,
• a copolymer of ethylene and propylene, a copolymer of ethylene and butylene, a copolymer of propylene or butylene, a copolymer of ethylene and another .alpha.-olefin having 5 to 10 carbon atoms, a copolymer of propylene and another .alpha.-olefin having 5 to 10 carbon atoms,
• a terpolymer of ethylene, propylene and butylene, a terpolymer of ethylene, propylene and another .alpha.-olefin having 5 to 10 carbon atoms,
• a mixture of two or more of said homopolymers, copolymers and terpolymers, and
• a blend of two or more of said homopolymers, copolymers and terpolymers that is optionally mixed with one or more of said homopolymers, copolymers and terpolymers, and
• wherein mixture component II is selected from the group consisting of (i) an HDPE and (ii) a blend of two blend components A and B, in which blend component A consists essentially of an HDPE and blend component B consists essentially of
• a propylene homopolymer,
• a copolymer of ethylene and propylene, a copolymer of ethylene and butylene, a copolymer of propylene and butylene, a copolymer of ethylene and another .alpha.-olefin having 5 to 10 carbon atoms, a copolymer of propylene and another .alpha.-olefin having 5 to 10 carbon atoms,
• a terpolymer of ethylene, propylene and butylene, a terpolymer of ethylene, propylene and another .alpha.-olefin having 5 to 10 carbon atoms,
• a mixture of two or more of said homopolymers, copolymers and terpolymers, and
• a blend of two or more homopolymers, copolymers and terpolymers, and
• wherein the film has a silk-matt finish having a sheen value of less than about 80 at a measurement angle of 85.degree., measured in accordance with ASTM-D-523-78 and a haze of greater than about 30, measured in accordance with ASTM-D-1003.