Method of manufacturing plate-shaped polyurethane foam sound-absorbing material having uneven surface and sound-absorbing material

摘要

The present invention relates to a method for producing a plate-like polyurethane foam sound absorbing material having an uneven surface that can be used for absorbing and shielding noise emission from various noise sources using a polyurethane foam, and a sound absorbing material formed thereby.;The method for producing a plate-shaped polyurethane foam sound absorbing material having an uneven surface according to the present invention is characterized in that the surface of the polyurethane foaming sound absorbing material is formed so as to have a concavo-convex surface formed continuously on one side surface before and after foaming with polyurethane foams, And is formed into a plate.;Therefore, when the uneven surface of the plate-like polyurethane foam sound-absorbing material is disposed so as to face the sound source, the propagation of sound waves from the sound source to the outside can be effectively blocked, and the lightweight polyurethane foam can be used Side adhesive agent layer 4, and therefore, it is easy to adhere to the surface of a sound-absorbing material itself and other equipment requiring soundproofing, There is an effect that it can be attached and fixed.