| abstract |
(57) [Summary] [PROBLEMS] To provide a heat-resistant cleaning sheet that is tough, thin-leafed, and easy to use. SOLUTION: It is composed of a metaphenylene isophthalamide polymer, has a large number of uniform fine pores on the surface and inside, has a porosity of 40 to 90%, and a surface porosity of 10 to 70. % Heat-resistant cleaning sheet, comprising a porous membrane having a percentage of |