Method of producing an insulated exhaust device
US9217357B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 20, 2011 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Nov 17, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method is provided for producing an exhaust gas aftertreatment or acoustic device (20) having a maximum operating temperature TMAX. The method includes the steps of providing a blanket (40) of silica fiber or alumina insulation material having a weight percentage of SiO2 or Al2O3 of greater than 65%; calcining the insulating material by heating the blanket (40) so that all of silica fiber insulation material is raised to a temperature T greater than TMAX; and securing the blanket (40) on the device (20) after the calcining step. The blanket is encapsulated in a covering prior to the securing step, and before or after the calcining step, with the covering between the blanket and the device being a selected one of foil, wire mesh, or siliconized fiber glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.