Footfall sound insulator comprises a plastic foam with a slight thickness, and talcum as cell former, where the plastic foam is physical propellant, where component of the propellant comes from the propellant group of propane

The footfall sound insulator comprises a plastic foam with a slight thickness and a space weight of 10-200 kg per cubic meter, and talcum as cell former, where the plastic foam is thermoplastic elastomer (TPE) in the form of a copolymer based on ethene-1-octene. The TPE quantity in the plastic foam is 90 wt.% related to the plastic foam. The plastic foam consists of polyethylene (PE) portion, which partially consists of low-density polyethylene (LDPE). The PE portion in the plastic foam is 50 wt.%. The LDPE portion is +- 1 wt.% related to the plastic foam. The footfall sound insulator comprises a plastic foam with a slight thickness and a space weight of 10-200 kg per cubic meter, and talcum as cell former, where the plastic foam is thermoplastic elastomer (TPE) in the form of a copolymer based on ethene-1-octene. The TPE quantity in the plastic foam is 90 wt.% related to the plastic foam. The plastic foam consists of polyethylene (PE) portion, which partially consists of low-density polyethylene (LDPE). The PE portion in the plastic foam is 50 wt.%. The LDPE portion is +- 1 wt.% related to the plastic foam. The plastic foam is physical propellant. The component of the propellant comes from the propellant group of propane, i-butane and carbon dioxide and is 90 wt.% related to the propellant quantity. The propellant quantity is 16 wt.% related to feed mixture in extruder. The quantity of talcum is 0-5 wt.% related to the plastic foam. Nach der Erfindung findet bei der Herstellung von Trittschalldämmung aus Kunststoffschaum geringer Dicke ein TPE Verwendung.