Water-soluble film article having salt layer, and method of making the same
US8728449B2 · kind B2 · utility
4Cited by
38References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2005 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Dec 19, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2401/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Water-soluble articles such as films, which can be made resistant to contact with small amounts of water, and methods of making the same are disclosed. The water-soluble article is formed from a water-soluble film-forming composition, such as polyvinyl alcohol, and includes a salt that is distributed more closely to at least one of the surfaces than throughout its thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.