Method for manufacturing paper and cardboard
US12234609B2 · kind B2 · utility
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20Claims
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Assignee
Inventors
Key dates
| Filing date | Jun 24, 2021 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Mar 26, 2042 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a method for manufacturing a sheet of paper or cardboard, comprising the addition of a water-soluble polymer P with a weight-average molecular weight greater than 750,000 Dalton to a fibrous suspension. This method comprises the following successive steps:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.