Method for extending the effective life of an oxygen scavenger in a container wall
OwnerPrasad Joshi, Frank J. Schmidt +1inventors
InventorsPrasad Joshi, Frank J. Schmidt, John M. Rost
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Abstract
A method of filling a container, and thereby extending the effective life of an oxygen scavenger, includes providing a container having an oxygen scavenger material, introducing product contents and a liquefied gas into the container to displace at least a portion of the air within the headspace, and capping or otherwise sealing the container. Displacing oxygen from the headspace diminishes the available oxygen within the container that can permeate into the container sidewall, thereby extending the effective life of the scavenger.
Claims23
A method for extending effective life of an oxygen scavenger that is disposed in the wall of a container, comprising the steps of:
- a. providing the container formed of a material comprising the oxygen scavenger;
- b. introducing a comestible product into the container, thereby forming a headspace between a product fill line a rim of the container;
- c. introducing a quantity of liquefied gas into the container;
- d. enabling vaporized liquefied gas to displace at least a portion of air in the headspace;
- and
- e. capping the container so as to maintain low oxygen partial pressure within the headspace relative to ambient atmospheric pressure, thereby diminishing the amount of oxygen available to permeate from inside the container into the oxygen scavenger.
Dependencies are inferred from the claim text.