PACKAGING FILM Russian patent published in 2019 - IPC B32B27/08 

FIELD: package and storage.

SUBSTANCE: invention relates to a packaging film having a monoaxially stretched, multi-layered polymer film having a total thickness of not more than 18 mcm, which consists of at least 50 wt. % polyolefins, polypropylenes and mixtures or copolymers thereof and has no embossed structure on its surface layers and in which its elongation when determined in accordance with DIN EN ISO 527-3 is at most 1 % at tensile load of at least 3 N per 25 mm width. Multilayer film is at least a five-layer structure of (a) a layer based on a mixture of low-density polyethylenes (LDPE) and medium-density polyethylene (MDPE) or a mixture of LDPE, MDPE and polypropylene (PP), (b) an adhesion promoter layer, (c) a layer based on a mixture of LDPE and MDPE or a mixture of LDPE, MDPE and PP or based on copolymers of ethylene and vinyl alcohol, polyvinyl alcohols, polyamides, copolyamides and / or polyesters, (d) an adhesion promoter layer and (e) a layer based on a mixture of LDPE and MDPE or a mixture of LDPE, MDPE and PP.

EFFECT: object of the present invention to provide a packaging film based on a flexible plastic film is available, which has, despite a reduction of the total layer thickness of the plastic film to less than 20 microns excellent mechanical properties and ensures a largely trouble-free processing.

15 cl, 4 tbl