Biodegradable packaging material
First Claim
Patent Images
1. A packaging material for enclosing a packaged good comprising:
- a first film layer;
a second film layer, wherein the second film layer is biodegradable; and
a reactive chemical interposed between the first and second film layers.
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Abstract
The present invention provides a biodegradable packaging material useable for indicating the expiration of the shelf-life of the goods enclosed therein. For example, the packaging material of the present invention is used to enclose perishable foods, medicines, medical devices, medical instruments, medical implant, or other such limited shelf-life goods.
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Citations
20 Claims
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1. A packaging material for enclosing a packaged good comprising:
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a first film layer;
a second film layer, wherein the second film layer is biodegradable; and
a reactive chemical interposed between the first and second film layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A packaging system for indicating a status of an enclosed good, comprising:
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a packaging material enclosing the good; and
a status indicator incorporated into a least a portion of the packaging material, the status indicator including first and second film layers, at least one of the first and second film layers being biodegradable; and
a reactive chemical interposed between the first and second film layers. - View Dependent Claims (18, 19)
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20. A packaging material for enclosing a perishable product subject to spoiling, the packaging material comprising:
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an inner layer made of a first biodegradable material;
an outer layer made of a second biodegradable material, the second biodegradable material being different from the first biodegradable material and degrading at a slower rate than the first biodegradable material; and
a reactive chemical interposed between the inner and outer layers, wherein the perishable product releases a stimulus during spoiling and the reactive chemical provides a visual indication of exposure to the stimulus.
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Specification