| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lid member having a time elapsing display indicator and a temporary seal for the lid member in which when a container for storing and packaging a packaged item requiring a heating operation, in particular, an instant noodle cup container or the like is heated for a specified period of time under a specified temperature, this heated state can be detected, the same discoloration can be displayed and recorded irreversibly and a color difference is high and visually seen. <P>SOLUTION: A lid member or a seal for temporarily fixing a lid member of this container is used for storing and packaging a packaged item requiring a heating operation. Either an entire or a part of the lid or the seal for temporarily fixing the lid member having an indicator is provided with an indicator acting as a time elapsing display means for displaying and recording the same discoloration irreversibly. <P>COPYRIGHT: (C)2004,JPO |
