B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
26/198, 26/202
B23P 6/00 (2006.01) D21F 3/08 (2006.01)
Patent
CA 1039097
ABSTRACT OF THE DISCLOSURE: A process for restoring a suction press shell used in the removal of water in the formation of paper sheets, the shell having a metal cylinder comprising the steps of: cleaning and roughening the outer metal surface of the cylinder, winding under tension on the outer surface of the cylinder successive layers of a woven glass, winding a reinforcing layer of a transparent cellulose film over the resin impregnated layers, heat treating the cylinder thus wrapped, grinding or tooling the outer surface of the cylinder thus heated to uniform surface and to remove the transparent cellulose film therefrom, applying a rubber cover over the outer surface thus obtained after removal of the cellulose film, heat treating the rubber cover at 270 to 300 degrees F. for 8 to 20 hours to promote vulcanization and adhesive reaction, redrilling drainage holes of the cylinder thus completed to restore their normal extension from the inner surface of the metal cylinder to the outer surface of the newly bonded rubber cover, and boring the inside diameter of the metal shell to a uniform surface. And, a press shell obtained by the above process.
253400
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