Method for producing a cellulose product and a cellulose product
US12312745B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2020 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Jul 31, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2120/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for producing a cellulose product from an air-formed cellulose blank structure comprising the steps of: providing a cellulose blank structure which is air-formed from cellulose fibres; applying, in a first application step (SA1), an alkyl ketene dimer (AKD) dispersion to the cellulose blank structure, and applying, in a second application step (SA2) a latex dispersion to the cellulose blank structure arranging the cellulose blank structure with the applied alkyl ketene dimer (AKD) dispersion and latex dispersion in a forming mould; heating the cellulose blank structure to a forming temperature (TF) in the range of 100° C. to 300° C., and forming the cellulose product from the cellulose blank structure in the forming mould, by pressing the heated cellulose blank structure with the applied alkyl ketene dimer (AKD) dispersion and latex dispersion with a forming pressure (PF) of at least 1 MPa, preferably 4-20 MPa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.