Presses – With additional treatment of material – Heating – cooling – or drying
Patent
1996-03-07
1998-01-06
Gerrity, Stephen F.
Presses
With additional treatment of material
Heating, cooling, or drying
100163R, 492 56, B30B 304, D21G 100
Patent
active
057042853
ABSTRACT:
A calender for the treatment of a paper web has at least one roller stack made of "hard" and "soft" rollers. The soft rollers have a covering made of a plastic whose recovery, after deformation, is such that the depth of the remaining deformation, after a faulty formation of up to 1 mm thick passes through the working nip is a maximum of 5 percent of the thickness of the faulty formation. In this way, paper characteristics that have previously been obtained using conventional 12-roller calender can be obtained with a lower number of rollers.
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Lauterbach, Thomas J., "Synthetic Composite in Supercalenders:update", Tappi Journal, vol. 76, No. 6, 1993. pp. 115-119.
Peel, John D., "Supercalendering and soft nip calendering compared", Tappi Journal, vol. 74, No. 10, 1991. pp. 179-186.
Rothfuss, U., "In-line-und Off-line-Satinage von holzhaltigen, Tiefdruckfahigen Naturpapieren", Wochenblatt fur Papierfabrikation, Nov. 12, 1993, pp. 457-466.
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"Die neuen Superkalanderkonzepte", Voith Sulzer Papiertechnik, 1994, No. 05/94 d.
Gerrity Stephen F.
Voith Sulzer Finishing GmbH
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