Calendering arrangement for a paper machine

Details Calendering arrangement for a paper machine Calendering arrangement for a paper machine

2005-05-03

2005-05-03

Ostrager, Allen (Department: 3725)

Presses

Methods

C100S161000, C100S176000, C162S205000, C162S358400

Reexamination Certificate

active

06886454

ABSTRACT:
Higher-gloss paper grades, in particular paper grades with a Hunter gloss % above 40, are produced in an arrangement having pairs of calendering units (1, 3) disposed in the machine direction one after the other and apart from one another, which pairs are each formed of separate and different calendering units (1, 3) and in each of which the nip load in the latter calendering unit (3) is higher than the nip load in the preceding calendering unit (1). Advantageously, the calendering unit (1) placed first in the machine direction is an on-line long-nip calendering unit (1) and the calendering unit (3) placed after that in the machine direction is an on-line or off-line supercalender.

REFERENCES:
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patent: 4375188 (1983-03-01), Leiviska
patent: 4606264 (1986-08-01), Agronin et al.
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patent: 4670102 (1987-06-01), Maurer et al.
patent: 5137678 (1992-08-01), Hess et al.
patent: 6073549 (2000-06-01), Winheim et al.
patent: 6085646 (2000-07-01), Lauterbach et al.
patent: 2 241 968 (1991-09-01), None
patent: WO 0132982 (2001-05-01), None

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