Foam assisted application of strength additives to paper products
US11365515B2 · kind B2 · utility
0Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2018 |
| Grant date | Jun 21, 2022 |
| Priority date | — |
| Expiry date | Jan 24, 2039 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A foaming formulation is provided herein. The foaming formulation includes at least one foaming agent in an amount of from about 0.001% to about 10% by weight based on a total weight of the foaming solution. The foaming formulation further includes a synthetic strength additive having a cationic functional group in an amount from about 0.01% to about 50% by weight based on a total weight of the foaming solution. The foaming formulation further includes water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.