HEAT RESISTANT FILTER

摘要

A heat-resistant filter which comprises a heat-resistant organic fiber substrate and, fixed thereto, a resin composition comprising an alkaline substance. The filter is reduced in the degree of the decrease in tensile strength and folding endurance, even after it is used under a high temperature condition, and is less prone to the failure of the material thereof even when it is used at a high temperature, and thus is capable of achieving a useful life of a long period of time.