Means for making a sealed envelope

Details Means for making a sealed envelope Means for making a sealed envelope

1991-06-05

1993-03-16

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Envelope sealing type

156227, 1564422, 156443, 156578, 118 32, 118 44, 118315, 271209, 493266, 493420, B43M 504

Patent

active

051941147

ABSTRACT:
A mechanism for applying adhesive to a sheet comprising a plurality of glue applicators comprising valves or nozzles adapted to form a charge of adhesive at the tip of each. The sheet is moved toward the nozzles to permit adhesive spots to be deposited on the sheet. The nozzles have periods of deactivation after which they are reactivated. A cleaning and moistening sponge (or a tray with appropriate fluids) is provided to maintain the adhesive in the nozzles in usable condition during periods of deactivation so that the adhesive may be immediately used and deposited on the sheet upon reactivation of the nozzles.

REFERENCES:
patent: 2029922 (1936-02-01), Heckel et al.
patent: 4104983 (1978-08-01), Carstedt
patent: 4540458 (1985-09-01), Baughman et al.
patent: 4732375 (1988-03-01), Tetherton
patent: 4799989 (1989-01-01), Marzullo
patent: 4819930 (1989-04-01), Jackson et al.
patent: 5048809 (1991-09-01), Tebbe et al.

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