Paperboard cannister fabrication method and apparatus

Details Paperboard cannister fabrication method and apparatus Paperboard cannister fabrication method and apparatus

1989-11-01

1990-12-11

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

118684, 156294, 156356, 156578, B32B 3100

Patent

active

049767976

ABSTRACT:
A method and apparatus is disclosed for providing a jet stream applied hot melt adhesive bead of consistent, uniform section to the interior surface of a paperboard cannister for the purpose of securing and sealing a metal or plastic and closure. Fluidized hot melt adhesive is delivered by a gear pump into a circulation loop which includes a jet nozzle supply spur. Electric solenoid valves control adhesive flow direction into the spur or circulation loop, alternatively. A variable flow restriction in the circulation loop downstream of the jet nozzle supply spur is adjusted to maintain substantially constant fluid pressure at the spur junction in either delivery mode.

REFERENCES:
patent: 3347206 (1967-10-01), Salzmann
patent: 3597298 (1971-08-01), Stengle, Jr.
patent: 3912154 (1975-10-01), Godar
patent: 4014723 (1977-03-01), Jones
patent: 4564410 (1986-01-01), Clitheros
patent: 4648154 (1987-03-01), Meinen

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