| abstract |
A water-soluble film contains a polyvinyl alcohol resin (A), and has a complete dissolution time (T) and a curl area percentage (S), wherein a product (T×S) of the complete dissolution time (T) and the curl area percentage (S) satisfies the following expression (1): n 1000≤(Complete dissolution time ( T ))×(Curl area percentage ( S ))≤7000 (1)n n The water-soluble film satisfies contradictory property requirements, i.e., satisfactory solubility and curl suppressing property, for example, even if being formed by using an acid-modified PVA resin. |