Structure for extracting water from a paper web in a papermaking process
US5071697A · kind A · utility
18Cited by
14References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Jan 22, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/195
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite structure for extracting water from a wet paper web in a papermaking process. The structure includes a base or substrate and a layer of water permeable polymeric foam, such as polyurethane foam, is secured to a surface of the substrate and an outer web supporting layer of water permeable polymeric material is bonded to the outer surface of the foam layer. The outer polymeric layer provides a smooth web supporting surface having toughness and abrasion resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.