Laminated films and packaging materials

Abstract

This invention provides laminated films and packaging materials that are highly recyclable and have good oxygen barrier properties because they do not use anchor coat layers or adhesives. [Solution] The laminated film 10 according to this embodiment comprises an olefin resin film 20 and a transparent vapor-deposited layer 40 laminated in direct contact with the olefin resin film 20. The olefin resin film 20 comprises at least a core layer 30 and a surface layer 31 in that order, and the surface layer 31 located on the transparent vapor-deposited layer 40 side of the olefin resin film 20 contains PP resin and metal oxide 32.

Claims

1. The olefin resin film comprises a transparent vapor-deposited layer laminated in direct contact with the olefin resin film, The olefin resin film comprises at least a core layer and a surface layer in this order. A laminated film characterized in that the surface layer located on the transparent vapor deposition layer side of the olefin resin film contains PP resin and metal oxide particles.

2. The aforementioned core layer is mainly composed of homoPP, The laminated film according to claim 1, characterized in that the surface layer is mainly composed of random PP.

3. The laminated film according to claim 1, characterized in that the olefin resin film is a biaxially oriented film.

4. The laminated film according to claim 3, characterized in that the surface layer further contains a compatibilizer.

5. A laminated film according to any one of claims 1 to 4, A coating layer formed of a barrier material is laminated on the transparent vapor-deposited layer, A packaging material characterized by comprising a heat-seal layer mainly composed of random PP on the side of the olefin resin film opposite to the transparent vapor-deposited layer side.

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