Multiple layer mat from a single layer

摘要

An intumescent catalyst mounting mat is provided by cutting a single piece of mat (10) into a desired profile and cutting a slit (20) about 1/2 way through the thickness of the mat (10) at a selected fold line (16). The mat (10) is then easily folded upon itself to create a double thickness mat that is already secured to the next layer and may have any desired profile.