Tray sealing and gas flush apparatus

Details Tray sealing and gas flush apparatus Tray sealing and gas flush apparatus

B - Operations, Transporting

65

B

B65B 31/06 (2006.01) B65B 31/04 (2006.01)

Patent

CA 2086191

Abstract of the Disclosure Apparatus for atmosphere-modifying and sealing individu- al trays includes a film disposing roller disposed closely adjacent the top of the tray to define a nip region and an elongated gas injection nozzle spanning the nip region for injecting gas through the nip region between the film and the tray. A split conveyor belt advances the trays past the film disposing roller to a sealing unit utilizing band sealers for the longitudinal tray edges and reciprocal "hot bar" sealer for the leading and trailing tray edges. The gas injection nozzle injects the gas substantially perpendicular to the advancing direction, down and into the individual trays. An optional second gas nozzle provides a gas flow curtain across the tray leading edge. 4/920409.1/SPECFLDR 12/04/92

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