Papermaking process and paper produced therefrom
US5501771A · kind A · utility
24Cited by
0References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Apr 28, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/68
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Homogeneous and regular paper sheets are shaped, via conventional papermaking technique, from nonpolluting papermaking compositions comprising an aqueous suspension of cellulosic papermaking fibers that also include (a) an inorganic filler material, (b) a papersizing agent and (c) a ternary retention additive which comprises (c)(1) a cationic starch, (c)(2) a polyaluminum chloride and (c)(3) an anionic silica.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.