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US 12,552,588 B2Granted
Water-soluble film and chemical agent package, and method for producing chemical agent package
AssigneeMitsubishi Chemical Corporation
InventorYuuma Kudo
Life of this patent
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Abstract
A water-soluble polyvinyl alcohol film with excellent conformability to a mold during forming and capable of being formed into a package with excellent appearance is provided. A water-soluble film includes a polyvinyl alcohol resin (A), a plasticizer (B), and a filler (C). The plasticizer (B) is present in a proportion of 3 to 22 parts by mass per 100 parts by mass of the polyvinyl alcohol resin (A), and a mass ratio (B)/(C) between the plasticizer (B) and the filler (C) is 1.5 to 25.
Claims11
A water-soluble film, comprising:
- a polyvinyl alcohol resin (A),
- a plasticizer (B), and
- a filler (C),
- wherein:
- the plasticizer (B) is present in a proportion of 3 to 22 parts by mass per 100 parts by mass of the polyvinyl alcohol resin (A), and
- a mass ratio (B)/(C) of the plasticizer (B) to the filler (C) is 1.5 to 25.
3 more elements
Dependencies are inferred from the claim text.