Complex sound-insulating material and flooring
US5187905A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1991 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Mar 29, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F15/186
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This invention relates to a complex sound-insulating 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/m.sup.2 ; 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.