Suction press roll

Details Suction press roll Suction press roll

1981-06-04

1982-12-28

Chin, Peter

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

291211, 291213, 100118, 100121, 162372, D21F 308

Patent

active

043660258

ABSTRACT:
A press roll for a press couple for dewatering a web in a papermaking machine wherein the roll preferably is a roll shell with certain of the drilled holes extending radially fully through the shell and certain other holes blind drilled to extend only a partial way into the shell and in one form, the shell having a rubber cover and the blind drilled holes extending alternate different depths to avoid shear planes in the rubber cover.

REFERENCES:
patent: 1596775 (1926-08-01), Stephansen
patent: 3023805 (1962-03-01), Walker
patent: 3562883 (1971-02-01), Kobayashi
patent: 3826713 (1974-07-01), Nykopp
"Wet-Press Water Removal Over a Wide Parameter Range", L. H. Busker, Paper Technology and Industry, Apr. 1980.
"Practical Limitations to Water Removal at the Presses", C. A. Warren, Paper Technology and Industry, Sep. 1976.
"How Important is Rewetting in Wet Pressing", Wm. C. Bliesner and M. A. MacGregor, TAPPI, vol. 59, No. 6, Jun. 1976.
"Duplication of Pilot Pressing Studies Using a Laboratory Web Former", Michael L. MacGregor, TAPPI, vol. 58, No. 6, Jun. 1975.
"Felt Designs Improved by Use of Microphotography Technique", Pulp & Paper, Feb. 1975.
"The Vented-Nip Press", E. J. Justus and Dennis Cronin, TAPPI, Aug. 1964, vol. 47, No. 8.

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