Process for making recycled paper having improving strength properties
US6187135A · kind A · utility
2Cited by
8References
11Claims
0Family size
Inventor
Key dates
| Filing date | Apr 28, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Apr 28, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for the manufacture of recycled paper having improved strength properties is achieved by replacing refiners by agitators, modifying extractor, applying effective amount of dispersion aids, and applying appropriate amount of dry strength additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.