Water-soluble films, water-soluble unit-dose articles and methods for the manufacture and use thereof
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2020-12-15
- Publication Date
- 2026-04-01
AI Technical Summary
Water-soluble unit dose articles made with traditional polyvinyl alcohol films face issues of incomplete dissolution during short and cold wash cycles, leading to undissolved film material depositing on washed articles, and seal failures between films result in premature rupture.
A water-soluble unit dose article comprising multiple compartments sealed with a homogeneous solvent sealing solution, using a blend of polyvinyl alcohol polymers with specific ratios and types of carboxylated anionic monomer units, and applying the sealing solution with absorbent materials to enhance film integrity and dissolution.
The solution reduces seal failures and ensures complete dissolution of the film under short and cold wash conditions, maintaining structural integrity and minimizing film residues.