Acoustically resistive layer, process for production of this layer and absorbent acoustic panel provided with at least one such layer, as well as its process for production
US6268038A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1998 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Aug 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24149
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An acoustically resistive layer comprises at least one layer (12) of acoustic damping cloth and a reinforcing material comprising a sheet (14, 114, 214, 314) of filaments (16) secured to the acoustically damping cloth. The filaments (16) are disposed unidirectionally, bidirectionally or multidirectionally. A process for producing such an acoustically resistive layer, comprises positioning an acoustically damping cloth (12) on a mold (18) having the shape of the layer to be obtained, and disposing on this acoustically damping cloth filaments (16) impregnated with a binder by filamentary winding, and then withdrawing the layer thus obtained from the mold, or by laying with application of pressure, and withdrawing the layer thus obtained from the mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.