Apparatus for applying and drying sealing material to the seal f

Details Apparatus for applying and drying sealing material to the seal f Apparatus for applying and drying sealing material to the seal f

1982-03-04

1983-08-09

Morgenstern, Norman

Coating apparatus

With means to apply electrical and/or radiant energy to work...

219 1069, 219 1081, B05C 2100

Patent

active

043972624

ABSTRACT:
An apparatus for applying latex areas to the seal flaps of paper envelopes and drying the latex is adapted to be placed either "in-line" or "off-line" with respect to a die-cut high speed envelope manufacturing machine. The apparatus includes a rotatable electrically insulated drum which acts as the ground for a radio frequency dryer (dielectric dryer) whose positive electrodes are adjustably spaced from the drum surface. The envelopes, during application of the latex and its drying, are held between flexible belts having projecting guides and are conveyed, still between the belts, by the rotating drum beneath the electrodes, with the latex exposed to the radio frequency drying.

REFERENCES:
patent: 2706233 (1955-04-01), Yamaguchi
patent: 2802085 (1957-08-01), Rothacker
patent: 3109080 (1963-10-01), Pungs et al.
patent: 3265265 (1966-08-01), Lewis
patent: 3511361 (1970-03-01), Urban
patent: 3952421 (1976-04-01), Wilson et al.
patent: 3965851 (1976-06-01), Cohn
patent: 4055295 (1977-10-01), Cohn
patent: 4117699 (1978-10-01), Renant
patent: 4210977 (1980-07-01), Lillibridge
patent: 4218830 (1980-08-01), Grassman

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