Abstract: A compound material including fibers which are embedded in a thermoplastic matrix has a free surface to be treated. The material has one or more capillary spaces extending between the fibers, which spaces are at least partly formed by communicating pores and which are open towards the free surface. An average diameter of the pores is greater than, equal to or not substantially less than the fiber diameter.

Abstract: The invention relates to a sound-damping partition, especially for the internal equipment of buildings. The partition consists essentially of a timer sub-frame (10) and two sets of planting (18, 20) on either wide side (12, 14) of the sub-frame (10) leaving a hollow space (16) filled with air and damping materials (36). To obtain improved airborne sound damping suing simple means, the invention proposes that one of the sets of planking (20) be secured to the sub-frame (10) by means of thick-walled, soft elastic beads of adhesive (32) while the other set of planting (18) is rigidly clamped to said sub-frame (10).