Multilayer film with lamination and heat-sealable sides, and...

Details Multilayer film with lamination and heat-sealable sides, and... Multilayer film with lamination and heat-sealable sides, and...

B - Operations, Transporting

32

B

B32B 27/06 (2006.01) B32B 7/04 (2006.01) B32B 27/18 (2006.01) B32B 27/30 (2006.01) B32B 27/32 (2006.01) B65D 65/40 (2006.01)

Patent

CA 2343535

A multilayer film having a lamination side and a heat-sealable side is described. The multilayer film comprises, a) an inner layer (i) ethylene/vinyl alcohol copolymer; b) a coupling agent layer (ii) and a separate coupling agent layer (ii'), said inner layer (i) being interposed between and in contact with each of said coupling agent layer (ii) and said separate coupling agent layer (ii'); c) at least one further layer (iii), said separate coupling agent layer (ii') being interposed between and in contact with each of said inner layer (i) and said layer (iii); d) at least one layer (iv), said coupling agent layer (ii) being interposed between and in contact with each of said inner layer (i) and said layer (iv); and e) a heat-sealable layer (v), said layer (iv) being interposed between and in contact with each of said coupling agent layer (ii) and said heat-sealable layer (v). Layers (i), (ii), (ii'), (iii) and (v) of the multilayer film contain 0.1 to 3 wt. % of a sorbitan monoester, based on the total weight of said multilayer film. Layer (iii) defines the lamination side of the multilayer film, and the heat-sealable layer (v) defines the heat-sealable side of the multilayer film. Packaging materials comprising the multilayer film are also described.

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