METHOD AND APPARATUS FOR FIBRILLATION OF CELLULOSE CONTAINING MATERIALS

In a method for manufacturing fibril cellulose, cellulose based fibre raw material is processed mechanically in a refining gap for separating fibrils. The fibres to be refined are subjected to the action of a surface roughness Ra provided by grits elevated from a refining surface delimiting the refi...

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Bibliographische Detailangaben
Hauptverfasser:	NUOPPONEN MARKUS, BJÖRKQVIST TOMAS, KOSKINEN TIMO, GUSTAFSSON HELMER, VEHNIÄINEN ANNIKKI, FREDRIKSON ANTTI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL DERIVATIVES THEREOF METALLURGY MILLING GRAIN ORGANIC MACROMOLECULAR COMPOUNDS PAPER-MAKING PERFORMING OPERATIONS POLYSACCHARIDES PREPARATORY TREATMENT OF GRAIN FOR MILLING PRODUCTION OF CELLULOSE TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKINGMACHINE
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Beschreibung
Zusammenfassung:	In a method for manufacturing fibril cellulose, cellulose based fibre raw material is processed mechanically in a refining gap for separating fibrils. The fibres to be refined are subjected to the action of a surface roughness Ra provided by grits elevated from a refining surface delimiting the refining gap, said surface roughness being lower than 3 μm, advantageously lower than 2 μm. The refining surface is formed by spraying grits and binder onto a substrate.