Patent ID: 8080210
Filing Date: 2011-12-20
Classification: B32B,F01N,Y10T

Abstract:
1. A multilayer mat for mounting a pollution control element in a pollution control device, said mat comprising: a.) at least one first layer having an exposed major surface, a length, and a width defined by opposite lateral edges, with the length of said first layer being greater than the width of said first layer, and at least one lateral edge of said first layer requiring protection from exposure to at least one of (i) mechanical erosion forces generated by the impact of exhaust gases passing through the pollution control device and (ii) high temperatures associated with the exhaust gases passing through the pollution control device, where the exhaust gases contact the at least one lateral edge of said first layer, when said multilayer mat mounts a pollution control element in a pollution control device; and b.) at least one second layer having a length, and a width defined by opposite lateral edges that is larger than the width of said first layer, with at least one lateral edge of said second layer being sufficiently resilient and durable to withstand exposure to at least one of (i) mechanical erosion forces generated by the impact of the same exhaust gases as in a.)(i) and (ii) high temperatures associated with the same exhaust gases as in a.)(ii), wherein said first layer and said second layer are stacked one on top of the other, with no portion of said second layer being coplanar with said first layer and said at least one lateral edge of said first layer being positioned between the opposite lateral edges of said second layer such that, when said multilayer mat is mounted in the pollution control device, the at least one lateral edge of said second layer will shield the at least one lateral edge of said first layer from exposure to exhaust gases passing through the pollution control device.