Thermo-formable multilayer barrier film with the appearance and texture of paper

A paper-like multilayer barrier film comprises a filled polypropylene layer and several unfilled layers. The filled layer contains 40-75% by wt. of inorganic fillers, forms one of the two outside layers of the film, and has a thickness of at least 40 μm. The unfilled layers include a barrier layer,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Reiners, Ulrich, Järund, Erik, Linné, Leif
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A paper-like multilayer barrier film comprises a filled polypropylene layer and several unfilled layers. The filled layer contains 40-75% by wt. of inorganic fillers, forms one of the two outside layers of the film, and has a thickness of at least 40 μm. The unfilled layers include a barrier layer, a sealing layer, and optionally at least one adhesive layer. The ratio of the total thickness of the unfilled layers to the thickness of the filled layer is in the range of 1:8 to 1:1.2.