Cryovac, Inc.

Jason G Verrett

Gregory E McDonald

Drew V Speer

Csaba Frank Kiss

Paul D Spence

Charles C Zende

Gregory H Grossman

Timothy S Dennison

Stephen Floyd Compton

Scott W Beckwith

Julian L Pruitt

Alexandre J Frost

H Dean Conner

Greg Grossman

An apparatus for dispensing a web from a plurality of rolls of serrated bags, includes first and second web printer/web feeders, each adapted to advance and print first and second webs from a first and second roll of serrated bags respectively, the first and second web printer/web feeders including a first and second printer, and a first and second set of nip rollers respectively; first and second accumulator guide plates located downstream of the first and second printers; a set of dispensing nip rollers located downstream of the first and second accumulator guide plates; a web accumulation area; a web sensor for sensing an end of the first or second web; a first and second seal sensing device; a dispensing guide plate located downstream of the web sensor; and a bag handling mechanism for advancing a leading bag to a bag loader.

Apparatus and method for printing and dispensing a web

The invention is a method, triggering unit, and system for activating an oxygen scavenging composition at high speeds. The triggering unit includes a plurality of UV lamps that can operate at increased temperatures and have high output intensites from about 10 to 35 mW/cm. The triggering unit can activate films at speeds from about 20 to 100 fps. Mercury amalgam lamps are useful in the practice of the invention. The invention also includes a UV dose management system and film tensioning system that facilitates triggering at high film speeds. The UV dose management system controls the amount of UV exposure that the film receives so that the oxygen scavenging rate of the activated composition can be controlled.

Method and apparatus for high speed activation of oxygen scavenging compositions

An apparatus is provided for activating an oxygen scavenging composition that includes a plurality of UV lamps arranged in a bank and disposed in a UV chamber; the UV lamps include first and second sides through which UV light is transmittable. A series of guide rolls disposed in the UV chamber define a film pathway for directing a film in close proximity with the first and second sides of the UV lamps. The UV shade is arranged to wrap about the first and second sides of the UV lamps, and may be configured to move between an open, partially open, and closed position so that the dosage of UV light to which the film is exposed may be controlled by adjusting the degree to which the shade is open. As a result, the UV shade may limit UV exposure without having to turn off the UV lamps.

Method and apparatus for controlled triggering of oxygen scavenging compositions utilizing a wrap-around shade

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Simpsonville, SC, United States of America

Jason G Verrett