SJAELVBAERANDE SANDWICHARTAT LJUDISOLERINGSELEMENT SAMT FOERFARANDE FOER DESS FRAMSTAELLNING

摘要

The invention comprises a self-supporting sandwich-like soundproofing element which comprises two outer layers which are different and arranged with mutual spacing, and a core layer situated between them and consisting of plastics material foam. The core layer has a density increasing in the direction of the two outer layers and consists of a plastics material having preponderantly open cells.