Method and device for treatment of fiber material

Abstract From the Canadian patent

Finely divided fiber material is treated in a continuously fed vertical treatment vessel. The fiber material is passed through the vessel in the form of a column of material , which is interrupted between successive treatment stages, for example, between impregnaiton and cooking or between cooking and washing. The interruption(s) break up the fiber material column and at this point the fiber material moves through a liquid layer and thereafter reforms the column with a degree of compaction which is not influenced by the weight of the fiber material above the liquid layer.