Barrier film with improved extensibility for cheese packaging

Details Barrier film with improved extensibility for cheese packaging Barrier film with improved extensibility for cheese packaging

B - Operations, Transporting

29

C

217/126, 18/783

B29C 47/06 (2006.01) B32B 27/08 (2006.01) C09J 123/08 (2006.01)

Patent

CA 2040064

A film which is useful in the packaging of newly formed blocks of cheese and demonstrates flexibility, extensibility, and improved sealing strength comprises an ethylene vinyl acetate/very low density polyethylene sealing layer. In addition to barrier properties, flexibility and extensibility are, preferably, also provided by a core layer of ethylene vinyl alcohol copolymer containing at least 32% by weight of ethylene. A preferred structure comprises a core layer of ethylene vinyl alcohol copolymer, two intermediate layers each comprising a polyamide; outer blend layers of very low density polyethylene, ethylene vinyl acetate, and anti-blocking agent, and adhesive polymeric materials to adhere the outer blend layers to the respective intermediate polyamide layers.

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