Heating – Advancing structure flexing – looping or coiling sheet – web...
Patent
1981-10-19
1984-04-17
Camby, John J.
Heating
Advancing structure flexing, looping or coiling sheet, web...
431328, 432 72, F27B 928
Patent
active
044431856
ABSTRACT:
Elongated webs of paper, textile, non-woven, and the like are heated by gas-fired burners, and where the webs are porous the hot combusted gas is sucked through the webs to add to the heating action. Where the webs contain an atmosphere-contaminating substance such as a coating having a vaporizable organic solvent, a shallow layer of the burner's gaseous combustion products can be swept over the coated web face as it is exposed to the burner's heating, to flush off the vaporized substance in relatively concentrated form in a fraction of the gaseous products. The flushed off concentrate contains little or no oxygen so that combustible vapors are not likely to form explosive mixtures. Separating the flushed off vapor from the concentrate is also easier.
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