Patent ID: 8637152

Claim:
A packaging material consisting of: a barrier layer, an acid-modified polyethylene resin adhesive layer and a sealant layer laminated in this order, the acid-modified polyethylene resin adhesive layer consists of an ethylene component, a (meth)acrylic acid ester component and an unsaturated carboxylic acid component, the content of the (meth)acrylic acid ester component in the acid-modified polyethylene resin is 2 to 18% by mass, the content of the unsaturated carboxylic acid component in the acid-modified polyethylene resin is 1 to 4% by mass, and the melt flow rate of the acid-modified polyethylene resin at 190° C. and a load of 21.3N (2160 g g) is 100 g/10 min or less.