Disposable composite insensitive to surface moisture but disintegratable in aqueous liquid
US4186233A · kind A · utility
65Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1978 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Mar 27, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A disposable composite comprising an absorbent, swellable film such as a lightly cross-linked polyacrylate, having on its two major surfaces a hydrophobic coating such as polyvinylidene chloride, is useful as a liner or packaging for disposable articles such as sanitary napkins. The hydrophobic coating protects the coated surfaces of the absorbent, swellable film from moisture, thereby maintaining the composite's integrity during use. Upon the composite's immersion in an aqueous fluid, the exposure of any uncoated film to water causes the composite to disintegrate, providing for easy flushability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.