MULTILAYER MOUNTING MATS AND POLLUTION CONTROL DEVICES CONTAINING SAME

摘要

A multilayer mat for mounting a pollution control element in a pollution control device is provided. The mat comprises at least one first layer having at least one lateral edge requiring protection from exposure to (i) mechanical erosion forces generated by the impact of exhaust gases passing through a pollution control device, (ii) high temperatures associated with the exhaust gases, or both (i) and (ii). The mat also comprises at least one second layer having at least one lateral edge that is capable of protecting the at least one lateral edge of the first layer. The width of the first layer is less than the width of the second layer. The first and second layers are stacked one on top of the other such that the at least one lateral edge of the first layer is positioned between the opposite lateral edges of the second layer. The first layer has an exposed major surface.