A New Technique for Stratified Forming, 2008 PAPERCON Conference

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A new technique for stratified forming has been developed where a thin passive liquid layer (a liquid vaneor “Aq-vane”) is injected in the between neighbouring pulp streams through a narrow hollow channel, there by preventing mixing between the layers. The Aq-vanes have been implemented in extensive pilot scale trials where the technical solution has been tested and evaluated. In addition, the impact of this new technique and sheet stratification on product properties has been evaluated.