Method to increase dewatering, sheet wet web strength and wet strength in papermaking
US8709208B2 · kind B2 · utility
9Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2012 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | May 25, 2032 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/44
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention provides a method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in a papermaking process. The method improves the efficiency of dewatering aid by coating at least some of the filler particles with a material that prevents the filler materials form adhering to dewatering aids. The dewatering aid holds the paper fibers together tightly and is not wasted on the filler particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.