Calender for the treatment of a paper web

Details Calender for the treatment of a paper web Calender for the treatment of a paper web

1996-03-07

1997-08-12

Czaja, Donald E.

Presses

With additional treatment of material

Heating, cooling, or drying

100163R, 100161, 100162R, 100162B, 100163A, 162361, D21G 100, D21G 102

Patent

active

056554427

ABSTRACT:
A calender having one stack of rollers has a working nip formed between a hard roller and a soft roller. A changeover nip is formed between adjacent soft rollers. The changeover nip is arranged approximately in the center of the roller stack. The cumulative weight of the rollers is such that the sum of the loads per unit of length of the working nips disposed above the changeover nip is at least 80 percent of the sum of the loads per unit of length of the working nips disposed below the changeover nip.

REFERENCES:
patent: 2300994 (1942-11-01), Thiele et al.
patent: 3291039 (1966-12-01), Christie
patent: 3340796 (1967-09-01), Link
patent: 3451331 (1969-06-01), Fredrickson et al.
patent: 4283690 (1989-04-01), Stotz
patent: 4736678 (1988-04-01), Stotz
patent: 5237915 (1993-08-01), Rounsley
patent: 5438920 (1995-08-01), Koivukunnas et al.

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