The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 1990
Filed:
Apr. 25, 1989
Pertti Heikkila, Raisio, FI;
Valmet Paper Machinery Inc., , FI;
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.