Paper-like and thermo-formable multilayer barrier film
AssigneeConvenience Food Systems B.V.
InventorsUlrich Reiners, Erik Jarund, Leif Linne
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Abstract
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 340 m. 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.
Claims17
A paper-like multilayer barrier film comprising a filled layer based on polypropylene and a plurality of unfilled layers, wherein the filled layer is filled with 40-75 weight %, based on the total weight of the filled layer, of an inorganic filler, forms one of the two surface layers of the film, and has a thickness of 340 μm, the unfilled layers comprising at least a barrier layer and a sealing layer and optionally at least one adhesive layer, and the relation of the total thickness of the unfilled layers to the thickness of the filled layer being from 1:8 to 1:1.2.
Dependencies are inferred from the claim text.