Press drying apparatus with deflection control and blow box cool

Details Press drying apparatus with deflection control and blow box cool Press drying apparatus with deflection control and blow box cool

1987-08-11

1989-11-14

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

162206, 162358, 1623601, 34111, 34123, 100 93RP, D21F 302

Patent

active

048805025

ABSTRACT:
A press drying apparatus is disclosed for removing excess water from a formed web by the simultaneous application to the web of elevated temperature and pressure for a prolonged period of time. The apparatus includes a frame and a heated roll rotatably supported by the frame. A shoe is connected to the frame with the shoe cooperating with the heated roll for defining therebetween a first nip for the passage therethrough of the web. A deflection controller is connected to the frame with the controller cooperating with the heated roll for defining therebetween a second nip. The second nip is disposed diametrically opposite to the first nip such that when the web extends through the first nip and the heated roll is heated, deflection of the heated roll towards the second nip is compensated for by the deflection controller.

REFERENCES:
patent: Re30268 (1980-05-01), Justus
patent: 2981175 (1961-04-01), Goyette
patent: 3799052 (1974-03-01), Kusters et al.
patent: 3841963 (1974-10-01), Schlunke
patent: 4324613 (1982-04-01), Wahren
patent: 4586984 (1986-05-01), Laapotti
patent: 4653395 (1987-03-01), Verkasalo
patent: 4691449 (1987-09-01), Wiberg
patent: 4738752 (1988-04-01), Busker

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