Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...
Patent
1992-08-06
1994-06-07
Hastings, Karen M.
Paper making and fiber liberation
Processes and products
Running or indefinite length work forming and/or treating...
100 38, 100 93RP, 162207, D21G 100, D21H 2504
Patent
active
053186702
ABSTRACT:
The invention has as its object the provision of a method and an apparatus for the generation of smoothness and gloss on paper which essentially precludes a re-erection of the surface fibers after the smoothing process. This is achieved in that the surface of a paper web (1) to be smoothed is heated to a temperature above the glass transition temperature of the fibers at the surface of the web without subjecting the web to a press nip, and then these fibers are deformed and fixed in the deformed state in a subsequent process step under the simultaneous action of pressure with shock cooling. Accordingly, there is associated with each surface of the paper web (1) to be smoothed a heating device (2) and also a subsequent cooled body (5, 9, 10) which presses against the surface.
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Link Christof
Stotz Wolf-Gunter
Hastings Karen M.
Sulzer-Escher Wyss GmbH
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