Floor mat, especially for motor vehicles

A floor mat comprised of cross-linked polyolefin foam for the lining of the floor interiors of motor vehicles, which comprises a cross-linked polyolefin foam floor mat base having at least one preselected surface area covered with a permanently applied floor-protecting surface layer comprised of a cross-linked polyolefin foam layer made of the same polyolefin as the polyolefin forming said polyolefin foam floor mat base and a thermoplastic polymeric film which is heatable in a high-frequency electrical field in dielectric fashion and which exhibits wear resistance superior to the cross-linked polyolefin foam layer and the foam floor mat base, said thermoplastic polymeric film being a film of a polymeric material with a dielectric constant of 2.5 to 6 and a dielectric loss factor greater than 1.5.times.10.sup.-3 and being formed of a polymer selected from the group consisting of polyvinylchloride, a soft polyvinylchloride, an ABS polymer, an ethylene copoloymer and a polyamide;

• said polymeric film and the polyolefin foam layer being bonded together to form said floor-protective surface layer by an adhesion promoter which is cross-linkable under the influence of heat and the polyolefin foam layer of the floor protecting surface layer being in contact with and bonded to an upper surface of the floor mat base, with the upper surface of the floor mat base and the polyolefin foam layer being melted and being homogeneously welded together by heat generated by the application of a high-frequency electrical field to the polymeric film;
• said cross-linked polyolefin foam floor mat base being preshaped to conform to the contours of the floor interior of a motor vehicle.