Papermaking using cationic starch and carboxymethyl cellulose or its additionally substituted derivatives
US5061346A · kind A · utility
82Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1988 |
| Grant date | Oct 29, 1991 |
| Priority date | — |
| Expiry date | Sep 2, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/29
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process of making paper by forming a paper furnish comprised of cellulosic fibers or cellulosic fibers and mineral filler material suspended in water, depositing the furnish on a papermaking wire, and forming a sheet out of the solid components of the furnish while carried on the wire, the improvement wherein there is mixed into the furnish, prior to its being deposited on the wire, about 0.50 to 5 percent of cationic starch (based on the dry weight of total solids in the furnish) followed by about 5 to 20 percent of a water soluble carboxymethyl) cellulose (based on the weight of the cationic starch).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.