Method and apparatus for drying printed or inked webs by means o

Details Method and apparatus for drying printed or inked webs by means o Method and apparatus for drying printed or inked webs by means o

1984-06-29

1986-02-04

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 31, 34 41, 34 68, 34114, 34216, 34217, 34156, 118 60, 118259, F26B 700

Patent

active

045676739

ABSTRACT:
In a method of and apparatus for heat-drying of webs, especially printed or inked webs, the web is first subjected to a contactless heat shock treatment, for example by hot air at about 300.degree. C. It is then heated by a contact process at a lower temperature, for example by heated rollers at about 230.degree. C., after which it is cooled by a contact process in a third step. Each of the heated rollers may have associated therewith a roller for applying a film of a buffer agent and also a cleaning roller. Energy expended in the processes is recovered by the use of heat exchangers. The apparatus may comprise a closed housing divided into separate chambers within which the sequence of steps is carried out.

REFERENCES:
patent: 1144896 (1915-06-01), Fosbraey
patent: 1579342 (1926-04-01), Andrews
patent: 2099162 (1933-11-01), Eberlin
patent: 3289315 (1966-12-01), Smith, Jr.
patent: 4285295 (1981-08-01), Iwao et al.
patent: 4458399 (1984-07-01), Kessler

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