Process for production of film comprising microfibrillated cellulose
US11834793B2 · kind B2 · utility
0Cited by
15References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2019 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Feb 24, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/52
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process for manufacturing a film comprising high amounts of microfibrillated cellulose (MFC), having haptic properties. According to the present invention, a wet web comprising MFC is formed, followed by addition of particles having an average diameter of at least 1 μm to the wet web, followed by dewatering and/or drying. The wet web may be formed for example by wet laid or cast forming methods. The particles may be added to the wet web for example by cast coating or spraying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.