SOUNDPROOFING MATERIAL

To provide a soundproofing material which can obtain good soundproof properties (including vibration damping properties), by eliminating a state of being bent toward the polyurethane foam side opposite to the skin after the skin is integrally molded, when it is placed on the floor surface of a vehicle or the like so that the polyurethane foam can adhere to the floor surface.SOLUTION: In a soundproofing material 10 in which a skin material 30 is integrally molded on one side of a polyurethane foam 20, a sample of the soundproofing material 10 of 200 mm square and with thickness of 20 mm has compression hardness of 500 N or more with load at 50 percent compression when compressed to 80 percent of the sample thickness by a compression jig of f80 mm at a test speed of 50 mm/min, as a measurement value. And in the polyurethane foam 20, slits 25...