Method and apparatus for drying a paper, or similar, web

Details Method and apparatus for drying a paper, or similar, web Method and apparatus for drying a paper, or similar, web

1983-03-16

1985-03-26

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 66, 34 73, 34162, 34216, F26B 318

Patent

active

045064571

ABSTRACT:
A method and an apparatus for drying a paper, or similar, web so that a wet web and a drying felt or wire are subjected to an air removal treatment, the web and the felt or wire freed of air are passed between moving surface elements having good heat conducting properties, said elements enclosing the web and the felt or wire along the whole width, the surface element contacting the web is heated in order to evaporate water contained in the web, and the surface element contacting the felt or wire is cooled in order to condense vapor emanating from the web into the felt or wire, and the felt or wire are separated from the dried web. The drying is carried out in two successive stages, and the surface elements are grouped so that each surface of the web at least in one stage comes into contact with the heated smooth surface element and in at least one further stage into contact with the drying felt or wire in order to distribute equally the markings caused by the drying felt or wire on the two surfaces of the web.

REFERENCES:
patent: 4112586 (1978-09-01), Lehtinen

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