Method for producing paper impregnated by a supercritical-pressure fluid, and impregnated, particularly coloured paper
US11091878B2 · kind B2 · utility
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23Claims
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Key dates
| Filing date | Mar 16, 2017 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Apr 2, 2037 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In the field of papermaking and more particularly a method for producing paper impregnated with a molecule of interest, particularly colored paper, and the associated product, i.e. impregnated paper, there is a disclosed a method implementing a supercritical-pressure fluid. Such paper, particularly colored paper, obtained from a formulation of paper pulp or paper including latex, does not bleed when it comes into contact with water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.