MACHINE DIRECTION ORIENTED FILMS CONTAINING A MULTIMODAL COPOLYMER OF ETHYLENE AND AT LEAST TWO ALPHA-OLEFIN COMONOMERS Russian patent published in 2022 - IPC B32B27/32 C08L23/08 C08J5/18 

Abstract RU 2770400 C2

FIELD: shaping.

SUBSTANCE: invention relates to a machine direction oriented (MDO) film and to a method for producing the MDO film, to an application of the MDO film as a cover film when packing silage and to a bale containing silage or a silage precursor packed in the MDO film. The MDO film comprises a multimodal copolymer of ethylene and at least two alpha-olefin comonomers with: a) a density from 906 to 925 kg/m3, determined in accordance with ISO 1183, b) MFR21 10 to 200 g/10 min, determined in accordance with ISO 1133, wherein said multimodal copolymer of ethylene comprises c) 50 wt.% or less of the first copolymer of ethylene and 1-butene and d) 50 wt.% or more of the second copolymer of ethylene and 1-hexene. The machine direction oriented film is therein stretched uniaxially in the machine direction (MD) with a stretching degree from 1:1.5 to 1:6.

EFFECT: production of an MDO film exhibitng excellent impact strength and tear strength.

13 cl, 3 dwg, 7 tbl

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RU 2 770 400 C2

Authors

Tran Anh Tuan

Cavacas Paulo

Gensous Audrey

Dates

2022-04-15Published

2017-04-28Filed