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US 5,686,161 AGranted
Moisture-sensitive label
AssigneeMultisorb Technologies, Inc.
InventorsJohn S. Cullen, Ronald C. Idol, Thomas H. Powers
Life of this patent
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AssigneeMultisorb Technologies, Inc.
InventorsJohn S. Cullen, Ronald C. Idol, Thomas H. Powers
Estimating the term…
An oxygen-absorbing label and a moisture-sensitive label. The oxygen-absorbing label consists of a base sheet, adhesive on the base sheet for securing the base sheet to an internal surface of a container, an oxygen-absorbing composition on the base sheet, and a permeable cover sheet secured to the base sheet to confine the oxygen-absorbing composition therebetween. The moisture-sensitive label is one wherein a moisture-sensitive material is used as part of the label instead of the oxygen-absorbing composition. The moisture-sensitive material may be a moisture adsorber such as silica gel or molecular sieve, or it may be a moisture supplier such as hydrogel. A plurality of the foregoing labels are mounted on a web to be used with conventional labeling equipment.
A moisture-sensitive label comprising a base sheet, a gas permeable cover sheet secured to said base sheet to define a space therebetween, material consisting essentially of moisture-sensitive material means for reacting with the environment in which said moisture-sensitive label is located, said space between said base sheet and said cover sheet containing essentially said moisture-sensitive material means, said cover sheet being secured to said base sheet along a border area which is outwardly of said space and which is free of said moisture-sensitive material means, and an adhesive layer on said base sheet on the opposite side thereof from said space for securing said label to a foreign body.
Dependencies are inferred from the claim text.