Water-soluble thermoformed containers comprising aqueous compositions
US6898921B2 · kind B2 · utility
44Cited by
13References
15Claims
0Family size
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Inventor
Key dates
| Filing date | Aug 23, 2001 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Aug 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1352
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a water-soluble container which comprises: a) thermoforming a first poly(vinyl alcohol) film having a water content of less than 5 wt % to produce a pocket; b) filling the pocket with a composition; c) placing a second film on top of the filled pocket; and d) sealing the first film and second film together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.