| 摘要 |
IN THE C A N A D I A N PATENT /A TRADEMARK OFFICE PATENT APPLICATION entitled: Complex sound-insulating material and flooring in the names of: Jean-Jacques POURTAU Thierry, Eric POURTAU assignee : TOMECANIC This invention relates to a complex sound-insula-ting material comprising a first lower sub-assembly, itself comprising at least one layer of a bituminous product, and a second upper layer which covers said first sub-assembly. The first sub-assembly comprises a first upper layer, a first intermediate layer and a first lower layer, whilst a) each of the first upper and lower layers is made of oxidized bitumen reinforced with first fibers and has a surface mass of between 500 and 1000 g/m2; b) the first intermediate layer is made of an organic binding agent, such as a bitumen, and by second fibers which are embedded in said binding agent and are in a non-woven form; and c) the second upper layer is made of an elastic foam. One application of the invention is the production of a sound-insulated tiled flooring. |
