METHOD OF PRODUCING AN INSULATED EXHAUST GAS DEVICE

摘要

A method is provided for producing an exhaust gas aftertreatment or acoustic device (18) having a maximum operating temperature Tmax. The method includes the steps of providing a blanket (28) of silica fiber insulation material having a weight percentage of SiO2 of greater than 65%; heating the blanket (28) so that all of silica fiber insulation material is raised to a temperature T greater than Tmax; and installing the blanket (28) in the device (18) after the heating step.