To settle the problem that, in a case of using dry ice, replenishment continuing for several days of keeping dead body is required, thereby much labor is required and, moreover, as cooling gas dispersed by the dry ice is carbon dioxide causing global warming so emission reduction thereof is exclaimed.

A surface layer containing alginic acid or a resin-based adhesive is formed on the substrate surface comprising wood, paper, cotton, fiber, resin, stone, metal, nonferrous metal, glass, ceramic, plastic, processed goods thereof, combination thereof, laminate thereof, woven fabric thereof, nonwoven fabric thereof or a part or whole thereof, and a surface layer containing apatite is formed thereon.