Vacuum assisted web drying system

Details Vacuum assisted web drying system Vacuum assisted web drying system

D - Textiles, Paper

21

H

D21H 25/06 (2006.01) D21F 5/14 (2006.01) F26B 13/10 (2006.01)

Patent

CA 2174373

A system providing wrinkle-free drying of a liquid zone coating applied to a paper web includes a surface of high thermal conductivity heated to a uniform temperature above the boiling point of the coating liquid and over which the web is drawn with the uncoated face in contact with the surface. A vacuum is also drawn through the surface to hold the web in intimate contact therewith during drying. The method and apparatus of the invention are applicable to unitary webs as well as composite webs such as corrugated paperboard.

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