| abstract |
A water-soluble film that shows a small change between a film hardness at the time of its normal state and a film hardness at high temperature at the time of its forming or immediately after the forming, that has satisfactory formability, and that is excellent in pinhole resistance and bag breakage resistance includes: a polyvinyl alcohol resin (A) ; and a plasticizer (B), wherein the plasticizer (B) contains a polyhydric alcohol (b1) having a melting point of 80° C. or more, a polyhydric alcohol (b2) having a melting point of 50° C. or less, and a polyhydric alcohol (b3) having a melting point of more than 50° C. and less than 80° C., and wherein a content ratio (X) of the polyhydric alcohol (b3) with respect to a total amount of the polyhydric alcohols (b1), (b2), and (b3) is 15 wt. % or less. |