Back to results
US 2023/0077220 A1Published application
Process for manufacturing a fiber based cellulose web for dry forming
AssigneeSöDra SkogsäGarna Ekonomisk FöRening
InventorsKatrin BÖRJESSON, Linda ECHARDT
Life of this patent
Estimating the term…
Abstract
The present inventive concept relates to a process for manufacturing a fiber based cellulose web for dry forming comprising. The process comprises providing a wet cellulose pulp; free drying said wet cellulose pulp to a free dried cellulose pulp, wherein said free drying provides a curl to fibres of said free dried cellulose pulp; separating said free dried cellulose pulp into individual free dried cellulose pulp fibres; and forming said individual free dried cellulose pulp fibres into a cellulose web.
Claims11
A process for manufacturing a fiber based cellulose web for dry forming comprising:
- a) providing a wet cellulose pulp;
- b) free drying said wet cellulose pulp to a free dried cellulose pulp,
- wherein said free drying provides a curl to fibres of said free dried cellulose pulp, said step of free drying being performed in hot air, by using flash drying, the hot air temperature being above 100° C., preferably above 130° C., and most preferably above 150° C.;
- c) compacting said free dried cellulose pulp to a density between 50-500 kg/m3, or 100-400 kg/m3, or preferably between 200-300 kg/m3;
- d) separating said free dried cellulose pulp into individual free dried cellulose pulp fibres;
- e) forming said individual free dried cellulose pulp fibres into a cellulose web.
3 more elements
Dependencies are inferred from the claim text.