Water-soluble film for package capsule of liquid detergent, and liquid detergent package capsule

Abstract

Provided is a water-soluble film for packaging a liquid detergent, the water-soluble film having excellent transparency and making it possible to improve the tensile strength of a water-soluble film comprising an anion-group-modified polyvinyl alcohol resin as a polyvinyl alcohol resin even when the wall thickness of the water-soluble film is reduced. This water-soluble film for a package capsule of a liquid detergent contains an anion-group-modified polyvinyl alcohol resin as a polyvinyl alcohol resin, a plasticizer, and silica particles that are not subjected to a hydrophobization treatment. The silica particles have an average particle diameter of 0.1-4.6 μm and a specific surface area of 10-490 m2/g, and are contained in the water-soluble film in an amount of 0.5-10 parts by mass per 100 parts by mass of the polyvinyl alcohol resin.

Dependencies are inferred from the claim text.