Moisture-imprevious panel capable of delayed hydration
US5053265A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 1990 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Feb 15, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/693
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A flexible or rigid panel, and method of making the panel, useful as a water barrier including an intermediate layer of a water-swellable colloidal clay, such as pentonite, sandwiched between two layers of sheet material, such as woven or non-woven fabric, or paperboard, wherein at least one one of the sheet material layers has a water-soluble coating material covering substantially the entire outer surface of the sheet material layer. The water-soluble coating is a material that dissolves upon a predetermined water contact period, having a controlled, predetermined water-solubility so that the intermediate water-swellable clay layer is protected against hydration during installation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.