| 摘要 |
PROBLEM TO BE SOLVED: To provide a holding seal material manufacturing method for manufacturing a holding seal material having a sufficient holding power even in a low temperature region of 600°C or lower by a convenient process.SOLUTION: A holding seal material manufacturing method comprises: a mat preparing step of preparing a mat for a holding seal material made of inorganic fibers loaded with an organic binder; and a heat needle treatment step of heating the mat and/or needle and piercing a needle into the mat having the organic binder loaded. The holding seal material obtained is weaker by 4-80% in the tensile strength of the organic binder, as measured by a method according to JIS-K6251, than the organic binder which is subjected to a heat-treatment at 105°C without the heat needle treatment step. |
