| 摘要 |
Innerseal for bottles or other containers comprising a facing layer, an insulating layer adhered to one major surface of said facing layer, and a thermally sensitive layer adhered to said insulating layer. In a second embodiment, the innerseal comprises a facing layer and a thermally sensitive layer adhered to said facing layer. Upon application of a sufficient amount of heat to the thermally sensitive layer, said layer will change its appearance in such a way as to provide an indication of tampering by means of heat.
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