| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that the storage life varies by temperature and environment, while the storage life does not indicate the actual storage deterioration of contents caused by oxygen, and we don't have a method to know the deterioration by oxygen of the contents even by an indirect method, that is, we have no method to easily judge the deterioration caused by oxygen diffused in a wrapping material for wrapping foods, preserved food, medical goods, medicines and the like, and a container. SOLUTION: The deterioration of a preserved matter caused by the diffusion of oxygen is indirectly indicated by allowing color, letter, drawing and the like to be displayed in accordance with the amount of diffused oxygen by reaction with oxygen diffused and intruded to the wrapping material for wrapping foods, preserved food, medical goods, medicines and the like, and the container. Concretely, a pigment generating color or changing a color by reaction with oxygen, or an organic pigment such as phosphor is added and mixed in a resin, and applied onto an outer face of the storage container or applied onto a surface of a product, or a pigment material reactable with oxygen is added to a thermosetting resin or an ultraviolet ray curing resin, and cured on a surface of the storage container to fix the pigment or the phosphor reactable with the diffused oxygen. Or the pigment material reactable with oxygen is added in the wrapping material for storage. COPYRIGHT: (C)2003,JPO
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