Container having an oxygen scavenging indication system
View Patent ↗A polyethylene terephthalate container having a hydrogen generator and catalyst disposed or otherwise incorporated in components of the container. The container further comprises an indicator system or means for use with a hydrogen generator and a catalyst system.
1. A container comprising:
a hydrogen generator generating molecular hydrogen;
a catalyst catalyzing a chemical reaction between said hydrogen and oxygen, said hydrogen generator and said catalyst combining to provide an oxygen scavenging capacity; and
an indication system indicating when said oxygen scavenging capacity has been reduced;
wherein said indication system comprises an oxygen sensitive label adhesive bonding a label to the container, said oxygen sensitive label adhesive becoming less adhered to said container in the presence of oxygen.
2. The container according to claim 1 wherein said indication system comprises:
a redox-active dye disposed within or placed on said container, said redox-active dye outputting a detectable signal when said oxygen scavenging capacity has been reduced.
3. The container according to claim 2 wherein said redox-active dye is disposed within or placed on a base portion, a shoulder portion, a sidewall portion, a label affixed to said sidewall portion, ink used in printing on the container, accessories connected to the container, a closure of the container, or any combination thereof.
4. The container according to claim 2 wherein said detectable signal is a color change.
5. The container according to claim 2 wherein said detectable signal is an invisible indicia to a visible indicia change.
6. The container according to claim 2 wherein said detectable signal is a luminescence change.
7. The container according to claim 2 wherein said detectable signal is a flourescence change.
8. The container according to claim 1 wherein said indication system comprises:
a hydrogen sensitive dye disposed within or placed on said container, said hydrogen sensitive dye outputting a detectable signal in response to a presence or absence of said molecular hydrogen.
9. A container comprising:
a hydrogen generator generating molecular hydrogen;
a catalyst catalyzing a chemical reaction between said hydrogen and oxygen, said hydrogen generator and said catalyst combining to provide an oxygen scavenging capacity; and
an indication means for indicating when said oxygen scavenging capacity has been reduced;
wherein said indication means comprises an oxygen sensitive label adhesive bonding a label to the container, said oxygen sensitive label adhesive becoming less adhered to said container in the presence of oxygen.
10. The container according to claim 9 wherein said indication means comprises:
a redox-active dye disposed within or placed on said container, said redox-active dye outputting a detectable signal when said oxygen scavenging capacity has been reduced.
11. The container according to claim 10 wherein said detectable signal is a color change.
12. The container according to claim 10 wherein said detectable signal is an invisible indicia to a visible indicia change.
13. The container according to claim 10 wherein said detectable signal is a luminescence change.
14. The container according to claim 10 wherein said detectable signal is a flourescence change.
15. The container according to claim 10 wherein said indication means is disposed in or placed on a base portion, a shoulder portion, a sidewall portion, a label affixed to said sidewall portion, ink used in printing on the container, accessories connected to the container, or a closure of the container.
16. The container according to claim 9 wherein said indication means comprises:
a hydrogen sensitive dye disposed in or placed on said container, said hydrogen sensitive dye outputting a detectable signal in response to a presence or absence of said molecular hydrogen.