Laminate film for use in vacuum packaging

Details Laminate film for use in vacuum packaging Laminate film for use in vacuum packaging

B - Operations, Transporting

65

D

190/150, 190/137

B65D 77/30 (2006.01) B32B 27/00 (2006.01) B65D 75/26 (2006.01) B65D 75/58 (2006.01) B65D 75/32 (2006.01)

Patent

CA 1069447

ABSTRACT OF THE DISCLOSURE This invention relates to vacuum packaging. A backing-board laminate having in a substrate layer of irradiated polyethylene, oriented polypropylene or oriented polyamide, an oxygen-barrier layer of hydrolysed ethylene-vinyl acetate copolymer and an uppermost layer of a blend of an ethylene-vinyl acetate copolymer with a wax is heat-sealed vacuum-tightly to a thermoformed pouch film laminate the lowermost layer of which is of polyethylene or an ethylene-vinyl acetate copolymer. An ink-spot of e.g. nitrocellulose resin provided between the backing board and pouch films enables the consumer to start to pull open seal. Once the pull is started, the seal opens easily. The easy-open seal, excellent barrier properties and high mechanical strength of the package make it commercially attractive.

229675

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