초록 ▼

A sealable, transparent, biaxially oriented multilayer polypropylene film comprising a core layer, optionally one or more intermediate layers located on one or both sides of the core layer, and at least one top layer on the one or more intermediate layers or on one or both sides of the core layer, w

A sealable, transparent, biaxially oriented multilayer polypropylene film comprising a core layer, optionally one or more intermediate layers located on one or both sides of the core layer, and at least one top layer on the one or more intermediate layers or on one or both sides of the core layer, wherein the core layer contains a polypropylene polymer or a polypropylene mixture; the optional intermediate layers consist essentially of a polypropylene polymer or a polypropylene mixture; and wherein at least one top layer is sealable, comprises a polyolefin copolymer or terpolymer, has a thickness of .ltoreq.0.4 .mu.m, and does not contain silicon dioxide or polydimethylsiloxane. The film is suitable as a packaging or wrapping film.

대표청구항 ▼

[ What is claimed Is:] [1.] A sealable, biaxially oriented, transparent, coextruded multilayer film which comprises a core layer and a sealable top layer, and an intermediate layer between the core layer and the sealable top layer wherein(a) the core layer comprises a propylene polymer, and(b) the t

[ What is claimed Is:] [1.] A sealable, biaxially oriented, transparent, coextruded multilayer film which comprises a core layer and a sealable top layer, and an intermediate layer between the core layer and the sealable top layer wherein(a) the core layer comprises a propylene polymer, and(b) the top layer comprisesa copolymer ofethylene and propylene,ethylene and butylene,propylene and butylene,ethylene and an .alpha.-olefin having 5 to 10 carbon atoms, orpropylene and an .alpha.-olefin having 5 to 10 carbon atoms, ora terpolymer ofethylene and propylene and butylene, orethylene and propylene and an .alpha.-olefin having 5 to 10 carbon atoms, ora mixture of one or more of the above copolymers and terpolymers with polypropylene, ora mixture of two or more of said copolymers, said terpolymers, or both of said copolymers and said terpolymers,wherein the layer thickness of the sealable top layer is less than or equal to 0.4 .mu.m, and wherein the top layer does not comprise either polydimethylsiloxane or silicon dioxide, andwherein the intermediate layer consists essentially of a propylene polymer and the layer thickness of the intermediate layer is 2 to 12 .mu.m.