Cellulose and cellulose ester film
US11525215B2 · kind B2 · utility
1Cited by
130References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2019 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Jul 26, 2039 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A film is made from a wet laid product containing cellulose fibers and cellulose ester fibers and a plasticizer. The film can be made by heat pressing the wet laid sheet to form a film having a continuous phase of cellulose ester resin and a discontinuous phase of cellulose fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.