Abstract: A water-soluble film for a liquid detergent-packaging capsule does not cause discoloration, can prevent precipitate of inorganic salts such as sulfites and sulfates contained in the packaging capsule or the liquid detergent, can prevent whitening due to precipitate, can maintain the haptics of the packaging capsule containing the liquid detergent and keep a good appearance over time. A liquid detergent is sealed in the water-soluble film. The film contains an anionic-group modified polyvinyl alcohol resin, a plasticizer including glycerin and sorbitol at a mass ratio of 1:2.1 to 5.3, and a sulfite, and is characterized in that the total contained amount of the glycerin and the sorbitol is 21-39 parts by mass, and the contained amount of the sulfite is 0.1-1.9 parts by mass, with respect to 100 parts by mass of the anionic-group modified polyvinyl alcohol resin.

Abstract: An object is to obtain a water-soluble film that ensures lower roll feeding tension, excellent anti-blocking property, etc., and does not stick to metal seal bars, etc., during heat sealing. As a solution, a water-soluble film is provided that contains A to D below: A. a polyvinyl alcohol resin; B. a plasticizer; C. an alkali metal salt of aliphatic acid having 6 to 22 carbon atoms and/or D. phosphate ester surfactant.