FILM BAG FOR FLOWING MATERIAL (VERSIONS), FILM STRUCTURE AND METHOD OF BAG MAKING (VERSIONS) Russian patent published in 2002 - IPC

FIELD: packing. SUBSTANCE: invention relates to ecologically clean polymeric film bags designed for packing flowing materials, for instance, milk. Bag can be made of one-layer or multiplayer film structure such as two- layer or three-layer coextruded film with at least one layer of mixture linear copolymer of ethylene and low- density polyethylene as sealing layer. Invention presents process of bag making for packing flowing materials with use of film structure of mixture of linear copolymer of ethylene and lowdensity polyethylene. Film structures for bags feature improved characteristics of strength limit at melting thermoweld strength limit, especially final thermoweld strength limit. EFFECT: increased speed of automatic packing machine as compared with that when standard commercial film is used for packing. 27 cl, 14 tbl, 6 dwg, 6 ex