| 摘要 |
The sound-absorbing ceiling element (20) for the construction of a jointless acoustical ceiling consists of a perforated slab (22) which is covered, room side, on a non-woven layer (24) covering the perforations, with a sound-conducting plaster layer (26) and is backed, on the side facing away from the room, with a sound-insulating layer (28). In order to prevent accumulations of dirt on the plaster layer (26) as a result of the filtering-out of dirt particles in the region of the perforations, it is proposed to cover the sound- insulating layer (28) on its side facing away from the perforated slab (22) with an impervious covering foil (30). …<IMAGE>… |
