Method and apparatus for calendering a web

Details Method and apparatus for calendering a web Method and apparatus for calendering a web

1983-07-25

1984-11-06

Feldman, Peter

Presses

Methods

With heating or cooling

100 47, 100162B, 29116AD, 72243, B30B 304, B30B 1300

Patent

active

044805373

ABSTRACT:
The invention comprises a method and apparatus for accurately calendering a web of material, such as paper. Zone control rolls of variable geometric profile are provided for a super calender at the top and bottom nips. The upper zone control roll has its geometric profile along the nip altered as a function of web caliper. The bottom zone control roll has its geometric profile altered as a function of temperature measured at the bottom compliant roll of the super calender.

REFERENCES:
patent: 4074624 (1978-02-01), Biornstad et al.
patent: 4114528 (1978-09-01), Walker
patent: 4327468 (1982-05-01), Kusters
patent: 4370923 (1983-02-01), Schmidt
patent: 4432277 (1984-02-01), Hartmann
H. J. Schultz: "The Nipco Roll for Cross Machine Profile Adjustment in Supercalenders".
Farrel Machinery Group; Bulletin No. 134, pp. 1 and 2, (Type XL), Apr. 1980.
Eduard Kusters; Information Bulletin No. 1, Oct. 1982.

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