Packaging film
AssigneeInfiana Germany GmbH & Co. KG
InventorsIngrid Sebald, Werner Schmidt, Felix Grimm
Life of this patent
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Abstract
A packaging film made of an at least monoaxially stretched, multi-layered plastic film comprised of at least up to 50% by weight of polyolefins and having a total thickness ≤18 μm, which has an expansion of up to a maximum of 1% at a tensile force of at least 3N per 25 mm width according to DIN EN ISO 527.3
Claims15
A packing film comprising an unembossed multilayer polymeric film having a total thickness ≤18 μm, which is oriented at least monoaxially in machine direction to an orientation ratio of at least 1:2, which comprises at least to an extent of 50 wt % polyethylenes (PE), polypropylenes (PP), their mixtures or copolymers,
- which comprises a layer sequence of at least five layers composed of
- a) a layer (a) as surface layer comprising a mixture of LDPE and MDPE or a mixture of LDPE, MDPE and PP,
- b) an adhesion promoter layer (b),
- c) a layer (c), based on a mixture of LDPE and MDPE or a mixture of LDPE, MDPE and PP or ethylene/vinyl alcohol copolymers, polyvinyl alcohols, polyamides, copolyamides, polyesters and/or polyether-polyamide block copolymers,
- d) an adhesion promoter layer (d), and
- e) a layer e) as surface layer comprising a mixture of LDPE and MDPE or a mixture of LDPE, MDPE and PP,
- and which has an elongation of up to at most 1% under a tensile force of at least 3 N per 25 mm width in accordance with DIN EN ISO 527-3 and has no embossed structure on its surface layers.
Dependencies are inferred from the claim text.