Patent ID: 6902817

Claim:
A multilayer structure with improved permeation for atmospheric diffusion of aromatic products, the structure comprising: (a) a first permeable layer comprising a blend of very low density polyethylene and low density polyethylene; (b) a second permeable layer comprising low density polyethylene; (c) a third permeable layer comprising a blend of very low density polyethylene and low density polyethylene; (d) a fourth permeable layer comprising a material selected from the group consisting of a blend of low density polyethylene and a modified polyolefin; and (e) a release layer comprising ethylene vinyl alcohol copolymer wherein said second layer is adhered to said first layer, said third layer is adhered to said second layer, said fourth layer is adhered to said third layer and said release layer is adhered to said fourth layer, wherein the bond strength between said release layer and said fourth layer is less than the bond strength between said first and second layers, the bond strength between said second and third layers, and the bond strength between said third and fourth layers; whereby said release layer is peeled apart from said fourth permeable layer when a force is applied.