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US 12,760,471 B2Granted
Process for manufacturing a fiber based cellulose web for dry forming
AssigneeSöDra SkogsäGarna Ekonomisk FöRening
InventorsKatrin Börjesson, Linda Echardt
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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.;
- c) compacting said free dried cellulose pulp to a density between 100-400 kg/m3 into compacted free dried cellulose pulp;
- d) separating said compacted free dried cellulose pulp into individual free dried cellulose pulp fibres;
- and
- e) forming said individual free dried cellulose pulp fibres into a cellulose web.
3 more elements
Dependencies are inferred from the claim text.