Arrangement for closing roll nips

Details Arrangement for closing roll nips Arrangement for closing roll nips

2008-03-11

2008-03-11

Nguyen, Jimmy T. (Department: 3725)

Presses

Concurrent pressing and conveying

Roll type

C100S164000, C100S169000

Reexamination Certificate

active

10516572

ABSTRACT:
A multi-roll calender (1) has one or several sets of rolls (2) attached to a frame (7) so that each set of rolls has at least three rolls. At least the first roll (3; 31) and the last roll (3; 32) have casings which can be moved toward the intermediate rolls (4). The first roll (3; 31) and the last roll (3; 32) are fixedly attached, at least one of the intermediate rolls (4) in the set of rolls is fixedly attached, and the other intermediate rolls are provided with lightening elements for lightening the auxiliary means related to the intermediate rolls. The roll nips (N) in the set of rolls (2) are closed by moving the first roll towards the intermediate rolls (4), and the roll nips between the last roll and the fixed intermediate roll included, are closed by moving the last roll towards the intermediate rolls (4).

REFERENCES:
patent: 4389933 (1983-06-01), Pav
patent: 4736678 (1988-04-01), Stotz
patent: 6129011 (2000-10-01), Cramer
patent: 6305280 (2001-10-01), Beckers
patent: 2003/0101880 (2003-06-01), Koivukunnas et al.
patent: 0 735 185 (2001-07-01), None
patent: 83346 (1991-03-01), None
patent: 113071 (2004-02-01), None
patent: WO 01/16424 (2001-03-01), None
patent: WO 03/104553 (2003-12-01), None
Written Opinion issued in PCT/FI03/00445.
International Preliminary Examination Report Issued in PCT/FI03/00445.
International Search Report issued in PCT/FI03/00445.
Search Report issued in FI 20021084.

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