Mat member, method of fabrication mat member, exhaust gas treating apparatus, and silencing device

摘要

A disclosed mat member includes inorganic fibers; a first main surface and a second main surface; and an edge surface surrounding the first main surface and the second main surface. An inorganic fiber scattering reduction unit is formed on at least a part of the edge surface of the mat member, which inorganic fiber scattering reduction unit is configured to reduce scattering of the inorganic fibers.