INFRARED DRYER WITH AIR PURGE SHUTTER

INFRARED DRYER WITH AIR PURGE SHUTTER

A combination infrared/air convection dryer or oven for travelling webs. A shutter assembly (40) is provided between the infrared radiation source (17) and the moving web in order to selectively expose the web to infrared radiation, and to create a sealed air chamber (19) when in the closed position...

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Hauptverfasser: ROGNE, ALLAN WALLACE, QUASS, JEFFREY DONALD
Format: Patent
Sprache:eng ; fre
Schlagworte:
BLASTING
DRYING
DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
HEATING
LIGHTING
MECHANICAL ENGINEERING
METHODS OF PRODUCING PAPER THEREON
PAPER-MAKING
PAPER-MAKING MACHINES
PRODUCTION OF CELLULOSE
TEXTILES
WEAPONS
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creator ROGNE, ALLAN WALLACE
QUASS, JEFFREY DONALD
description A combination infrared/air convection dryer or oven for travelling webs. A shutter assembly (40) is provided between the infrared radiation source (17) and the moving web in order to selectively expose the web to infrared radiation, and to create a sealed air chamber (19) when in the closed position. Enhanced drying of the web and/or a coatin g on the web at high speed is achieved without a concomitant increase in dryer length. When the drying atmosphere has a high concentratio n of solvent, exposure of that atmosphere to the heating elements, which can cause explosions, is eliminated by actuation of the shutters. In a preferred embodiment of the invention, air bars are used to floatingly support the moving web to avoid contact of the web with dryer elements.
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A shutter assembly (40) is provided between the infrared radiation source (17) and the moving web in order to selectively expose the web to infrared radiation, and to create a sealed air chamber (19) when in the closed position. Enhanced drying of the web and/or a coatin g on the web at high speed is achieved without a concomitant increase in dryer length. When the drying atmosphere has a high concentratio n of solvent, exposure of that atmosphere to the heating elements, which can cause explosions, is eliminated by actuation of the shutters. 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subjects BLASTING
DRYING
DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
HEATING
LIGHTING
MECHANICAL ENGINEERING
METHODS OF PRODUCING PAPER THEREON
PAPER-MAKING
PAPER-MAKING MACHINES
PRODUCTION OF CELLULOSE
TEXTILES
WEAPONS
title INFRARED DRYER WITH AIR PURGE SHUTTER
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