Method of finishing paper utilizing substrata thermal molding

Details Method of finishing paper utilizing substrata thermal molding Method of finishing paper utilizing substrata thermal molding

D - Textiles, Paper

21

F

92/1

D21F 11/00 (2006.01)

Patent

CA 1250477

ABSTRACT Disclosed in a process for producing gloss and smoothness on the surface of a paper web, comprising: A. advancing a web of papermaking fibers through a nip formed by a smooth metal finishing drum and a resilient backing roll providing a nip pressure on the web of at least 13,780 KN/M2 (2000 psi); and B. heating the drum to a temperature at least high enough to heat a critical substrata portion of the web to a temperature of at least the dynamic Tg of the fibers to provide an unexpected increase in gloss and surface flatness without excessively densifying the entire sheet.

481710

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