Method for the production of a film comprising microfibrillated cellulose, a film and a paper or paperboard product
US11105045B2 · kind B2 · utility
0Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2017 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Sep 27, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2301/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method for the production of a film comprising microfibrillated cellulose, wherein the method comprises the steps of; providing a suspension comprising between 70 weight-% to 100 weight-% of microfibrillated cellulose based on total dry weight, forming a fibrous web of said suspension, drying the web in a drying equipment wherein the web is at least partly dried at a drying rate above 75 kg(H2O)/m2/h by use of hot air whereby a film is formed. The invention also relates to a film produce according to the method and a paper or paperboard substrate comprising said film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.