Paper manufacturing structure particularly for detaching a web f

Details Paper manufacturing structure particularly for detaching a web f Paper manufacturing structure particularly for detaching a web f

1977-04-14

1978-09-12

Fisher, Richard V.

Paper making and fiber liberation

Apparatus

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

162305, 162306, 162307, 162360R, 162364, 162374, D21F 152

Patent

active

041135571

ABSTRACT:
A paper machine has a wire which transports a web to a detaching location where the web is to be detached from the wire and transported to a press section. A felt travels up to and beyond the detaching location to engage the web at the detaching location and receive the web from the wire while continuing to transport the web, while it adheres to the felt, to the press section. At the detaching location, by way of a structure which preferably is in the form of a suction box, a flow of air is created to travel first through the wire, then through the web, and then through the felt with this flow of air being highly localized so as to travel only through a relatively narrow rectangular area which extends transversely across the felt throughout the entire width thereof as well as the entire width of the web and wire. At the same time, the felt is guided when travelling beyond the detaching location so as to be deflected away from the wire, with the web adhering to the felt, through a relatively small angle along a path which makes with the wire an angle of substantially less than 45.degree..

REFERENCES:
patent: 1701226 (1929-02-01), Collins
patent: 3309263 (1967-03-01), Grobe
patent: 3515637 (1970-06-01), Reynolds et al.
patent: 3836428 (1974-09-01), McConaughy
patent: 3839143 (1974-10-01), Suckow
patent: 3861996 (1975-01-01), Dorfel
patent: 3992253 (1976-11-01), Schiel

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