Sheets having improved stiffness from fiber, latex and coalescing agent
US4707221A · kind A · utility
31Cited by
13References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1984 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Mar 26, 2004 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/35
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for preparing a sheet with improved stiffness by mixing a fiber, a latex having minimum film forming conditions greater than the conditions the sheet reaches during drying and a fugitive coalescing agent. The mixture is collected and dried under conditions less than the minimum film forming conditions of the latex. The process enables hard latexes to be employed which do not form films under the drying conditions of the sheet whereby the hard latexes can contribute to the stiffness of the final sheet. A sheet prepared by the process is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.