Film structures and packages therefrom useful for respiring food products that release CO
View Patent ↗Multilayer laminates useful in packaging of respiring food products and packages made therefrom. The laminates have a CO 2 permeability rate of at least about 10 cm 3 /100 in 2 /24 hours and an O 2 permeability rate of less than about 5.3 cm 3 /100 in 2 /24 hours.
1. A multilayer respiring packaging laminate comprising an inner sealant layer, an outer moisture barrier layer, and a layer consisting essentially of amide between the inner and outer layers, and having a CO 2 permeability rate of at least about 10 cm 3 /100 in 2 /24 hours and an O 2 permeability rate of less than about 5.3 cm 3 /100 in 2 /24 hours, wherein the inner sealant layer is selected from the group consisting of a polyethylene copolymer or a polyethylene copolymer blend, and the outer moisture barrier layer is selected from the group consisting of oriented polypropylene, polypropylene, and high density polyethylene.
2. The laminate of claim 1 wherein the amide layer is selected from the group consisting of poly (hexamethylene sebacinimide) [nylon 6,10], poly (hexamethylene adipamide) [nylon 6,6] and poly (E-caprolactam) [nylon 6].
3. The laminate of claim 1 further comprising an adhesive layer.
4. The laminate of claim 3 wherein the layers are adhered directly to each other in the following sequence: outer layer, adhesive, amide layer, sealant.