To provide a reactive hot-melt adhesive which can be applied at a relatively low temperature to a decorative sheet regardless of its kind, is excellent in adhesive properties, causes a crosslinking reaction in a short time after the decorative sheet is contact-bonded to a substrate material, does not suffer from adhesion peeling caused by shrinking force of the sheet, and permits quality inspection of the decorative material and a processing step for cutting and the like in a relatively short time after the end of the gluing step thereby ensuring early shipment of the product.

The reactive hot-melt adhesive composition comprises, as a reactive component, a prepolymer terminated with an isocyanate group obtained by reacting a non-crystalline polyol with a polyisocyanate compound, and at least one of 2,2'-dimorpholinoethyl ether and bis(2,6-dimethylmorpholinoethyl) ether as a catalyst component in an amount of 0.05-6 wt.% in the composition.