Abstract: The invention pertains to a method for manufacturing a formed body with a cavity structure for the sound and/or heat insulation of buildings. According to the invention, pre-foamed polystyrene particles are compressed into a formed body in a mold or on a conveyor belt system under the influence of heat and/or pressure, wherein the degree of compression amounts to 0.2-0.8, preferably 0.3 to 0.7, particularly 0.4 to 0.6, such that a communicating cavity volume is preserved in the formed body. The invention furthermore pertains to a formed body for the sound and/or heat insulation of buildings.

Abstract: A formed body with a cavity structure for the sound and/or heat insulation of buildings. The formed body has a cavity structure and has pre-foamed polystyrene particles compressed in a mould or on a conveyor belt system under the influence of pressure and/or heat. The formed body has a communicating cavity volume and the communicating cavity volume has a volume fraction that amounts to 5 to 30 vol. %, preferably 10 to 25 vol. %, particularly 15 to 20 vol. %, referred to the total volume of the formed body, and comprising at least part of the pre-foamed polystyrene particles firmly enclosed in a cured organic or inorganic binder that is used for coating at least part of the polystyrene particles prior to their compression in a mould or on a conveyor belt system.

Abstract: The invention pertains to a method for manufacturing a formed body with a cavity structure for the sound and/or heat insulation of buildings. According to the invention, pre-foamed polystyrene particles are compressed into a formed body in a mould or on a conveyor belt system under the influence of heat and/or pressure, wherein the degree of compression amounts to 0.2-0.8, preferably 0.3 to 0.7, particularly 0.4 to 0.6, such that a communicating cavity volume is preserved in the formed body. The invention furthermore pertains to a formed body for the sound and/or heat insulation of buildings.