Water closet disposable ostomy bags and materials
US5009647A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1990 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Feb 6, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2439/80
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A wc disposable ostomy bag has a wall formed from an inner layer of polyethylene and an outer layer of polyvinyl alcohol. Two flexible layers of aluminum are located between the inner and outer layers to reduce odor transmission through the wall. The material of the walls may be formed by vapor depositing the aluminum layers on respective faces of the inner and outer layers and then laminating the inner and outer layers together with the aluminum layers facing one another. Alternatively, both aluminum layers may be deposited on the same one of the inner or outer layers with a thin non-metallic layer between them to prevent the aluminum layers having common grain boundaries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.