To provide a UV-ray curing type heat sensitive adhesive which can adhere by heating the objects whose surfaces are oppositely placed in a superposed state, and also provide a heat sensitive adhesive sheet using the UV-ray curing type heat sensitive adhesive, which requires no releasing paper.

The heat sensitive delayed tack adhesive comprises a solid plasticiser and a monomer and an oligomer which are capable of being cured by a UV-ray, whereupon a good heat sensitive delayed tack adhesive material excellent in anti-blocking property can be obtained, and this material is remarkably valuable as an adhesive for labels of a glass bottle, PET bottle, a carton box and the like from an economical and resource-saving point of view by virtue of requiring no releasing paper.