Process for the production of paper
US5127994A · kind A · utility
87Cited by
6References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1989 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Jan 24, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/67
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for the production of paper by forming and dewatering a suspension of cellulose containing fibres, and optional fillers, on a wire. The forming and dewatering is carried out in the presence of a combination of an aluminum compound, a cationic retention agent and a polymeric silicic acid having a high specific surface area. The combination of substances improves dewatering and retention of fines and fillers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.