Process for drying a coated moving web

Details Process for drying a coated moving web Process for drying a coated moving web

1996-04-01

1997-03-04

Bennett, Henry A.

Drying and gas or vapor contact with solids

Process

Diverse types of drying operations

34267, 34420, F26B 700

Patent

active

056068050

ABSTRACT:
A process for drying a web of material moving at a speed of at least about 150 feet per minute. In the first step of the process, a web of material is contacted with a first mixture of air and flue gas while passing the web under a first air nozzle. Thereafter, a portion of the first air/flue gas mixture is exhausted through a first exhaust nozzle disposed less than 12 inches away from the first air nozzle. Thereafter, the web is passed under a multiplicity of gas fired infrared radiation emitting burners while contacting said moving web with infrared radiation and flue gas and heating said moving web to a temperature of from about 100 to about 280 degrees Fahrenheit. Thereafter, the web is contacted with a second mixture of air and flue gas while passing it under a second air nozzle.

REFERENCES:
patent: 3183604 (1965-05-01), Stauffer
patent: 3460265 (1969-08-01), Smith, Jr.
patent: 3623235 (1971-11-01), Smith, Jr.
patent: 4198764 (1980-04-01), Ellison et al.
patent: 4472888 (1984-09-01), Spiller
patent: 4936025 (1990-06-01), Heikkil a
patent: 4942674 (1990-07-01), Karlsson
patent: 5009016 (1991-04-01), LePisto et al.
patent: 5299362 (1994-04-01), Baldinger

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