POROUS FILM PRESERVATION SOLUTION

摘要

The problem to be solved by the present invention is to provide a porous film preservation solution that does not foam and can impart a film with moisture-retaining properties which are stable over a long period without requiring pre-treatment. The aforementioned problem is solved by a porous film preservation solution characterized by containing glycerol and / or polyglycerol, and a polyvalent alcohol with a surface tension of 40mN/m or less.