Breathable film for cheese packaging

Details Breathable film for cheese packaging Breathable film for cheese packaging

B - Operations, Transporting

32

B

B32B 27/34 (2006.01) B32B 27/08 (2006.01) B32B 27/30 (2006.01) B65D 65/40 (2006.01) B65D 75/00 (2006.01) B65D 85/76 (2006.01)

Patent

CA 2323338

The present invention is directed to a heat shrinkable film for packaging high gassing cheeses, specifically Swiss-type cheeses. The film includes at least one barrier layer of a copolyamide having a melting temperature of less than about 150°C, preferably nylon 6/6.9, and exhibits a CO2;O2 transmission ratio of at least 7.0 at 50% relative humidity. Furthermore, the film has a hot tensile strength at 85°C of at least 1800 psi in at least one direction as measured by D882 and a percent elongation at 85°C of at least 120% in at least one direction as measured by ASTM D882. Preferably, at least 50 percent by weight of the film is one or more ethylene copolymers, preferably one or more ethylene/vinyl acetate copolymers.

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