Patent ID: 8858743

Claim:
Process for sealing an underground or above-ground construction, including the steps: a) coating a flexible polyolefin sealing film with a non-reactive hot melt adhesive compound to form a hot melt adhesive coated polyolefin sealing film, which is non-tacky at 25° C.; b) laying the hot melt adhesive coated polyolefin sealing film on the surface of an above-ground or underground construction; c) adding heat to partially melt the non-reactive hot melt adhesive compound; d) cooling the non-reactive hot melt adhesive compound to form an adhesive bond between the flexible polyolefin sealing film and the surface of the construction, wherein the introduction of the heat in step c) occurs in such a way that the temperature of the hot melt adhesive compound does not exceed a temperature that is at least 30° C., below the melting point of the hot melt adhesive compound, and wherein the non-reactive hot melt adhesive compound contains no epoxy resin.