Method for producing paper, board or the like
US11162221B2 · kind B2 · utility
1Cited by
1References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2018 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Apr 9, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for producing paper, board or the like. The method comprises obtaining a fibre stock comprising lignocellulosic fibres and adding a retention agent system comprising a cationic synthetic polymer to the fibre stock and forming a fibrous web from the fibre stock and drying the web. Microfibrillated non-wood cellulose is added to the fibre stock as a component of the retention agent system and sequentially with the cationic synthetic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.