CO-EXTRUDED LAMINATE BIAXIALLY DRAWN SEALED FLAT FILM FOR MAKING TUBULAR FILMS AND FOR USING SUCH FILMS Russian patent published in 2006 - IPC B29D7/01 B29C47/06 B29C65/72 B29C55/12 B29C51/04 B32B27/34 C08L77/02

Abstract RU 2271277 C2

FIELD: processes of making laminate drawn and sealed flat films for making sealed tubular films, possibly, for making envelopes and packages for food products.

SUBSTANCE: flat film includes two sealed surface layers formed at least of one copolyamide and at least of one amorphous polyamide and (or) at least of one homopolyamide and(or) at least of one modified polyolefin. Such film is highly impermeable to steam and oxygen.

EFFECT: enhanced strength of film sealed joint.

26 cl, 3 ex

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RU 2 271 277 C2

Authors

Grund Khartmut

Lang Khorst

Shauer Khel'Mut

Dates

2006-03-10—Published

2001-02-01—Filed