Presses – Concurrent pressing and conveying – Roll type
Patent
1993-02-16
1994-07-19
Gerrity, Stephen F.
Presses
Concurrent pressing and conveying
Roll type
100153, 1623583, 492 7, 492 20, B30B 304, D21G 102
Patent
active
053298470
ABSTRACT:
A press roll in cooperation with a mating roll defines a roll nip for the treatment of a moving web of material with the press roll and mating roll being oriented to provide a non-vertical pressing plane. The press roll includes a rotatable roll casing and a yoke located within the roll casing. The roll casing and the yoke defining an intermediate space therebetween. Certain press roll parameters such as the dimensions and material of the roll casing and the yoke and/or the degree of filling of the intermediate space with a liquid are selected such that gravity induced flexures of the roll casing and the yoke occurring in a median plane perpendicular to the pressing plane are approximately equal.
REFERENCES:
patent: 4064607 (1977-12-01), Wolf
patent: 4328744 (1982-05-01), Pav et al.
patent: 4498383 (1985-02-01), Pav et al.
patent: 4520723 (1985-06-01), Pav et al.
patent: 4570314 (1986-02-01), Holik et al.
patent: 4639346 (1987-01-01), Pav et al.
patent: 4988410 (1991-01-01), Meinecke et al.
patent: 5081759 (1992-01-01), Schiel
"A New Approach to Roll Crowning-Particularly for Calenders", Paper Trade Journal, pp. 36-42, Jul. 1960.
Gerrity Stephen F.
J.M. Voith & GmbH
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