Packaging film in particular twist-wrapping film and method for production thereof
OwnerMarkus Hamulski, Peter Schaferinventors
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Abstract
A film comprising at least three layers, whereby the inner layer contains polyolefins and/or olefin co-polymers and, on both sides of the inner layer at least one further layer is provided containing a mixture of styrol-butadiene-styrol block co-polymers with styrol homo-polymers, a method for production thereof and the use thereof as a packaging film, in particular a twist-wrapping film.
Claims13
Packaging film, in particular twist-wrapping film, comprising at least three layers of polymer plastics, characterized in that
- a) the inner layer contains polyolefins and/or olefin copolymers,
- b) and that, on both sides of the inner layer, at least one further layer is provided containing a mixture of styrene-butadiene-styrene block copolymers with polystyrene homopolymers.
Method for the production of a packaging film according to one or more of claims 1 to 10, characterized in that the inner layer and the two layers adjacent to the inner layer are co-extruded.
Method for the production of a packaging film according to claim 11 [sic], characterized in that the co-extrusion is a blown film co-extrusion or broad-slit die co-extrusion.
Dependencies are inferred from the claim text.