Patent ID: 7267858

Claim:
A packaging material, comprising a substrate, and an inner sealing layer comprising a polyolefin layer and an aqueous dispersion-type amorphous polyester resin layer successively disposed on the substrate, wherein said aqueous dispersion-type amorphous polyester resin layer contains an anionic surfactant or an amphoteric surfactant and an organic solvent, wherein said aqueous dispersion-type amorphous polyester resin layer is substantially free from an organic solvent having a boiling point of at most 100° C., as represented by a residual solvent content of below 8 mg/m 2 measured according to an evaporation test at 80° C., wherein said acqueous dispersion-type amorphous polyester resin layer comprises a combination of an amorphous polyester resin having a glass transition temperature of at least 40° C. and an amorphous polyester resin having a glass transition temperature below 40° C., wherein the packaging material is in the form of a bag.