Heat welding apparatus

Electric heating – Heating devices – Combined with container – enclosure – or support for material...

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Details

219411, 219354, 198409, F27B 906, F27D 1100, B65G 4724

Patent

active

045567832

ABSTRACT:
A heat welding apparatus for bonding a heat-meltable sheet, such as an asphalt sheet, to a substrate. The apparatus has a chamber having an inlet and an outlet on opposite sides thereof and an exhaust duct in its upper portion for exhausting gases generated during welding, a conveyor mechanism extending through the inlet and outlet of the chamber for intermittently conveying a laminated structure of the substrate and the heat-meltable sheet, and near infrared radiators for heating the laminated structure disposed respectively above and below the laminated structure which has been fed into the chamber, and stopped thereat, by the conveyor mechanism.

REFERENCES:
patent: 1776823 (1930-09-01), Summey
patent: 1869639 (1932-08-01), Washburne
patent: 2866548 (1958-12-01), Simpson
patent: 3240915 (1966-03-01), Carter
patent: 3249741 (1966-05-01), Mills
patent: 3260363 (1966-07-01), Vukosic
patent: 3433966 (1969-03-01), Letch
patent: 3683154 (1972-08-01), Kipple
patent: 4208573 (1980-06-01), Risse
patent: 4276465 (1981-06-01), Flavio
patent: 4363955 (1982-12-01), Gauthier

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