Apparatus for screening paper fiber stock

Details Apparatus for screening paper fiber stock Apparatus for screening paper fiber stock

B - Operations, Transporting

07

B

209/105

B07B 1/20 (2006.01) B01D 29/35 (2006.01) B07B 1/46 (2006.01) D21D 5/02 (2006.01) D21D 5/16 (2006.01)

Patent

CA 1156609

BFN 6969 APPARATUS FOR SCREENING PAPER FIBER STOCK Abstract In screening apparatus for paper making fiber incorporating a cylindrical screen member provided with screening perforations which are either cylindrical or slotted in section, the per- forations are characterized by greater flow area on the inlet side of the cylinder than on the accepts side of the cylinder. More specifically, each of the screening perforations includes a generally funnel-shaped portion on the inlet side of the cylinder which leads to a short parallel sided portion on the accepts side of the cylinder.

379941

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