Tubular film having sealing layer of propylene/ethylene...

Details Tubular film having sealing layer of propylene/ethylene... Tubular film having sealing layer of propylene/ethylene...

B - Operations, Transporting

29

C

18/1041, 204/91.

B29C 47/06 (2006.01) B29C 61/06 (2006.01) B32B 27/08 (2006.01) B29C 71/04 (2006.01)

Patent

CA 1199770

TUBULAR FILM HAVING SEALING LAYER OF PROPYLENE ETHYLENE RANDOM COPOLYMER ABSTRACT OF THE DISCLOSURE A heat sealing layer is provided for multiply tubular film preferably of the type having an inner shrink layer of an irradiatively cross-linked ethylene vinyl acetate copolymer, a core barrier layer of vinylidene chloride-vinyl chloride copolymer, and an outer abuse layer of an ethylene vinyl acetate copolymer, the sealing layer being melt bonded onto the shrink layer and being composed of a propylene ethylene random copolymer. Heat seals formed in making bags from the improved film demonstrate enhanced high temperature strength and grease resistance. An associated method for making the tubular film is also provided.

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