Invention Publication
- Patent Title: A METHOD FOR PRODUCING A FILM COMPRISING NANOCELLULOSE, AND A FILM COMPRISING NANOCELLULOSE
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Application No.: US17907028Application Date: 2021-03-22
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Publication No.: US20230193559A1Publication Date: 2023-06-22
- Inventor: Otto Nylén , Isto Heiskanen , Joanna Rahko , Riku Pihko
- Applicant: Stora Enso OYJ
- Applicant Address: FI Helsinki
- Assignee: Stora Enso OYJ
- Current Assignee: Stora Enso OYJ
- Current Assignee Address: FI Helsinki
- Priority: SE 503173 2020.03.23
- International Application: PCT/IB2021/052359 2021.03.22
- Date entered country: 2022-09-22
- Main IPC: D21H11/18
- IPC: D21H11/18 ; D21F3/02 ; D21H17/06 ; D21H25/06

Abstract:
The present invention relates to a method for producing a film comprising nanocellulose, which method comprises: providing a suspension comprising 50-100 weight-% of nanocellulose based on total dry weight; forming a fibrous web of said suspension on a non-porous support; providing a press fabric comprising a web-side first surface and an opposite second surface, wherein said press fabric comprises a woven first fabric layer arranged in the press fabric as a layer providing said web-side first surface such that said press fabric has a woven surface structure at said web-side first surface; applying said web-side surface of said press fabric into direct contact with said web; wet-pressing said web by conducting said web, arranged between said press fabric and said non-porous support, through a pressing equipment, and drying the dewatered web so as to form said film. The invention further relates to a film produced from said method.
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