PURPOSE: To obtain an adhesive for fabrication of foams having excellent heat resistance and adhesion to foams, by blending a vinyl copolymer having a particular composition with a pentaerythritol ester of polymerized rosin and an isocyanate compd. as a crosslinking agent.

CONSTITUTION: A vinyl copolymer comprising 0.5W10wt% unsatd. monomer unit (A) (e.g., acrylic acid unit) and 0.2W5wt% hydroxyl group-contg. unsatd. monomer unit (B) (e.g., 2-hydroxyethyl acrylate) with the balance being an unsatd. monomer unit (C) copolymerizable with the components A and B (e.g., vinyl acetate or styrene) is prepared. 100pts.wt. vinyl copolymer is mixed with 2W50pts.wt. pentaerythritol ester of polymerized rosin and 0.2W3wt% isocyanate compd. as a crosslinking agent (e.g., tolylene diisocyanate) to obtain an intended adhesive for fabrication of foams.