Method for producing densified cellulosic composite material
US12320065B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 12, 2018 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Mar 30, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21J3/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a method for obtaining densified material comprising the steps ofa. providing lignocellulosic material,b. delignification of the lignocellulosic material providing a delignified material, wherein the delignification step is performed in such a way that the lignin of the lignocellulosic material is almost completely removed and wherein the structural integrity of the lignocellulosic material is maintained in the delignified material,c. densification of the delignified material providing a densified material.Furthermore, a densified material is provided. The fibers and fibrils are maintained in the structural directionality of the raw material and that the cellulosic material is whitish.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.