PURPOSE: To provide a resin composition for bonding, excellent in high- temperature adhesiveness, etc., by mixing a styrenic elastomer with a polyethylene grafted with a specified amount of an unsaturated carboxylic acid (derivative).

CONSTITUTION: 100 pts.wt. flexible polymer comprising a styrenic elastomer is mixed with 1-30 pts.wt. graft polyethylene partly or wholly grafted with 0.05-15wt.% unsaturated carboxylic acid (derivative) (e.g. maleic anhydride) to produce a resin composition for bonding. The use of this composition for bonding, for example, between a polyethylene terephthalate layer and a saponified ethylene/vinyl acetate copolymer layer can produce a laminate free from delamination even under high temperature conditions, for instance, when it is treated in a retort, having low gas permeability, and suitable for food packaging material, etc.