Supercalendering optimization using a steam shower

Details Supercalendering optimization using a steam shower Supercalendering optimization using a steam shower

2007-11-13

2007-11-13

Halpern, Mark (Department: 1731)

Paper making and fiber liberation

Processes and products

Running or indefinite length work forming and/or treating...

C162S207000, C162S193000, C162S224000, C162S290000, C100S038000, C100S041000, C034S114000, C034S124000

Reexamination Certificate

active

10208643

ABSTRACT:
There is described a method and apparatus for applying steam from a steam source to a moving web to thereby improve the smoothness and gloss of the web. A housing has at least one cooling chamber upstream and at least one steam chamber downstream. The cooling air in the cooling chamber is used to cool the web before steam is applied to the web from the steam chamber. This allows a sufficient volume of steam to be delivered to the web to thereby raise its moisture content to a desired level to thus achieve optimized calendering of the web.

REFERENCES:
patent: 6073549 (2000-06-01), Winheim et al.
patent: 2001/0008181 (2001-07-01), Anderson
patent: 121 374 (1983-09-01), None
patent: WO 00/79049 (2000-12-01), None
Klepaczka and Tarnawski “One-Sided Gloss-Calendering of Paper” (NDN 188-0117-2655-0) Przeglad Papier. 37, No. 7/8: 259-261 (Jul./Aug. 1981).

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