Starch-loaded polyvinyl alcohol copolymer film for packaging non-liquid product and method for making the same
US7005168B2 · kind B2 · utility
9Cited by
8References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Feb 22, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1352
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A water-soluble film for packaging a non-liquid product, a package employing the film, and methods of making the same, are disclosed. The film is made from a hydrolyzed copolymer of vinyl acetate and methyl acrylate in a range of from about 30 to about 95 percent by weight, modified starch in a range of from about 4 to about 30 percent by weight, plasticizer in a range of from about 5 to about 30 percent by weight, lubricant/release agent in a range of from about 0.0 to about 1.5 percent by weight, and surfactant in a range of from about 0.01 to about 1.5 percent by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.