Method for producing a cellulose product
US12138830B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2023 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Jun 15, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31F1/0077
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing a cellulose product from a multi-layer cellulose blank structure, wherein the method comprises the steps; forming the multi-layer cellulose blank structure from at least a first layer of dry-formed cellulose fibres and a second layer of a cellulose fibre web structure, through arranging the at least first layer and second layer in a superimposed relationship to each other and in the superimposed relationship arranging the at least first layer and second layer in contact with each other; arranging the multi-layer cellulose blank structure in a forming mould; heating the multi-layer cellulose blank structure to a forming temperature in the range of 100° C. to 300° C., and forming the cellulose product from the multi-layer cellulose blank structure in the forming mould, by pressing the heated multi-layer cellulose blank structure with an isostatic forming pressure of at least 1 MPa, preferably 4-20 MPa, wherein the multi-layer cellulose blank structure is shaped into a two-dimensional or three-dimensional fibre composite structure having a single-layer configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.