VERFAHREN ZUM NASSSIEBEN VON FASERSTOFFSUSPENSIONEN

In a waste paper or carton recovery process pre-used material is chopped and soaked in water to form a fibrous suspension (S) from which foreign bodies are removed by sieve (1) filtration. The sieve apertures (3) are esp. elongated holes between 1 and 8 mm wide, pref. 1-3 mm. The fibres are driven t...

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Bibliographische Detailangaben
Hauptverfasser:	DUFFY, GEOFFREY, G, BURGER, RALF, SCHABEL, SAMUEL, LANGE, WERNER, VEH, GERHARD
Format:	Patent
Sprache:	ger
Schlagworte:	PAPER-MAKING PRODUCTION OF CELLULOSE TEXTILES TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKINGMACHINE
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Beschreibung
Zusammenfassung:	In a waste paper or carton recovery process pre-used material is chopped and soaked in water to form a fibrous suspension (S) from which foreign bodies are removed by sieve (1) filtration. The sieve apertures (3) are esp. elongated holes between 1 and 8 mm wide, pref. 1-3 mm. The fibres are driven through the apertures by the action of a wiper blade (4). The sieve is a cylindrical drum with an interior feed of suspended fibres used in association with a print pre-sorting assembly. The hole (3) ratio of length to width is pref. between 2 and 10. The holes are approx. separated by intervals of 1-6 mm. The blade sweeps the holes at an angle of approx. 75degrees to the direction of travel.