Combination infrared and airborne drying of a web

Details Combination infrared and airborne drying of a web Combination infrared and airborne drying of a web

1989-04-25

1990-06-26

Bennet, Henry A.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 41, 34 60, F26B 700

Patent

active

049360256

ABSTRACT:
Method and device in a drying of a moving web, in which the web is passed while being supported free of contact through various drying gaps in which the web is dried by infrared radiation and air blowing. The web is passed into an infrared treatment gap in which infrared radiation is applied to the same, preferably from gas-operated infrared-radiation elements. Cooling air of the infrared unit is blown into the treatment gap and towards the web. After the infrared treatment gap, the web is immediately passed into an air drying gap within which the web is dried by way of air blowings which, at the same time, support the web free of contact. The cooling air and possibly combustion gases from the infrared unit are passed through a web inlet opening of the airborne web dryer unit into an interior of the box of the airborne unit to constitute part of its circulating air. The cooling air required by the infrared unit is passed into the infrared unit out of a pressure compartment of the airborne unit.

REFERENCES:
patent: 4513516 (1985-04-01), Bjornberg
patent: 4594795 (1986-06-01), Stephansen

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