Patent ID: 8652618

Claim:
A multi-layer film comprising: an aluminum layer (B) subjected to boehmite treatment, a polyolefin resin film (A) on one side of the layer (B) and a polyamide layer (C) on the other side of the layer (B), wherein the film (A) comprises a layer (A-1) composed of an acid-modified polyethylene resin (α) and a layer (A-2) composed of a crystalline polyethylene resin (β), a temperature at which the acid-modified polyethylene resin (α) has a crystallinity of 60%, Tm α60 , is lower than a temperature at which the crystalline polyethylene resin (β) has a crystallinity of 70%, Tm β70 , and the layer (B) is present directly on the layer (A-1).