Sound and heat insulation material
US6914020B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 2000 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Jun 3, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/469
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sound and heat insulation material for insulating buildings, motor vehicles, conduits, etc., is covered on at least one exterior surface with a material which reacts at a given temperature by foaming up, and which is difficult to ignite or inflammable. The exterior covering can be a sheet or fiber layer which is impregnated with the reactive material or coated with it. The fibers of the sound and heat insulation core layer can also be directly coated with the reactive material or be mingled with a variable proportion of foamable fibers. The sound and heat insulation element, which is difficult or impossible to ignite, has good insulating properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.