| 摘要 |
The invention relates to a sound-insulating material, or a coating, which is made of rubber and PUR plastic, and a method for producing such a material. In order to reduce the weight of the sound-insulating material while providing said material with essentially the same or even an improved sound-deadening effect, the rubber (12) and the PUR plastic (13) are mixed together, the rubber forming a matrix in which a plurality of gas-filled, elastic hollow bodies (14) are embedded. Thermoplastic rubber particles and PUR plastic particles are extruded by adding a blowing agent so as to obtain a foam-type mixed material. The blowing agent is added in the form of microhollow bodies containing a blowing agent. |
