ning olefin copolymer or the thermoplastic resin composition of the invention is used as an adhesive resin, X in the formula (3) is preferably an acid anhydride group, an epoxy group, an amino group or a hydroxyl group, and Y in the formula (6) is preferably an epoxy group, an amino group or a hydroxyl group. [1405] If X is a hydroxyl group and R3 in the formula (3) is a straight-chain or branched