Closed draw transfer system with gaseous pressure direction of w

Details Closed draw transfer system with gaseous pressure direction of w Closed draw transfer system with gaseous pressure direction of w

1974-05-01

1976-09-21

Bashore, S. Leon

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

34152, 162290, 162307, 162359, 162360R, D21F 502, D21F 902

Patent

active

039810844

ABSTRACT:
A paper making apparatus and process of the type wherein the paper is processed from a starting condition of a slurry of pulp fiber to a later condition of a continuous self-sustaining paper sheet. The paper is carried continuously along a preselected path of travel extending from the starting condition to the later condition and for processing the paper as it is being carried. The path of travel normally includes a plurality of pairs of contacting members, including a forming wire and a pick-up felt, a pick-up felt and a bottom felt, and a pick-up felt and Yankee dryer, such contacting members processing the paper. The paper is passed through each nip defined by each of the contacting members and continues along its desired path of travel. Air pressure is applied on the discharge side or outgoing side of one or more of the nips defined between the sets of contacting members. The air pressure is applied in a direction which causes the paper to remain in the desired path of travel and to avoid deviation thereof from the desired path of travel.

REFERENCES:
patent: 1297192 (1919-03-01), LeRoy et al.
patent: 1479265 (1924-01-01), Tompkins
patent: 1701226 (1929-02-01), Collins
patent: 2888074 (1959-05-01), Hornbostel
patent: 3111454 (1963-11-01), Tucker et al.
patent: 3560333 (1971-02-01), Douglas et al.
patent: 3839146 (1974-10-01), Fleissner

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