Calender with pivotally displaceable roll

Details Calender with pivotally displaceable roll Calender with pivotally displaceable roll

1991-10-10

1994-07-19

Gerrity, Stephen F.

Presses

With additional treatment of material

Cutting, breaking, piercing, or comminuting

100162R, 100163R, 100166, 100169, B30B 1534, B30B 304, D21G 102

Patent

active

053298446

ABSTRACT:
A calender in a paper or board machine comprises a calender frame, at least two soft-faced rolls mounted on the calender frame and at least one hard roll mounted on the calender frame in a manner that allows the hard roll to be displaced between a first position in which it forms calendering nips with the two soft-faced rolls and a second position in which it is spaced from the soft-faced rolls. During threading of the web; while the calender is in operation, the hard roll is shifted to its second position, the web is passed over the soft-faced rolls, and the hard roll is shifted back to its first position and brings the web into the nips between the hard roll and the soft-faced rolls.

REFERENCES:
patent: 4077316 (1978-03-01), Georget
patent: 4326456 (1982-04-01), Kankaanpaa
patent: 4471690 (1984-09-01), Yamaguchi et al.
patent: 4632655 (1986-12-01), Benkwitz

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