| 摘要 |
PURPOSE:To reduce excessive occurrence of surface pressure to honeycomb catalyzer by providing concaves on one side or both sides of a seal-mat consisting of heat-resistant fiber. CONSTITUTION:A seal-mat 1 consists of heat-resistant fiber such as asbestos, rock wool, ceramic fiber, carbon fiber, etc. Concaves 1a of optional profile and amount are provided on one side or both sides of the seal-mat. Providing means of concaves are also optional. Owing to the concave provision, when excessive compression is applied, one part of convex portions (b) of the surface of seal-mat 1 moves to the concave portions 1a and the compression is reduced, and as a result, breaking possibility of honeycomb catalizer is largely lowered. |
