Breathable packaging film having enhanced thermoformability

Details Breathable packaging film having enhanced thermoformability Breathable packaging film having enhanced thermoformability

B - Operations, Transporting

32

B

B32B 27/28 (2006.01) B65D 65/40 (2006.01)

Patent

CA 2523679

The present invention describes thermoformable coextruded film suitable for use in packaging applications having at least a first polymeric layer serving as an outermost exterior-film layer and comprising a cycloaliphatic polyester, an aromatic polyester or blends thereof; a second polymeric layer serving as a thermoforming-assist layer and comprising a polyolefin; and a third polymeric layer serving as an innermost exterior-film layer and comprising a heat-sealing polyolefinic material. The films of the present invention are oxygen-permeable in that they exhibit an oxygen transmission rate of between 2-1000 cm3/100 in2/24 h.atm.

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