Apparatus for applying and drying sealing material to the seal flap of envelopes
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United States of America Patent
Stats
-
Aug 9, 1983
Issued Date -
N/A
app pub date -
Mar 4, 1982
filing date -
Oct 6, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
International Classification(s)
Cited Art Landscape
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