| 摘要 |
PROBLEM TO BE SOLVED: To provide a can body and a can lid in which whether sealing is surely conducted or not can easily be confirmed visually from outside and sealing performance can be confirmed by sounding when the can is opened. SOLUTION: A pressure confirming part which is elastically deformed inward by negative pressure of inside part of the can body before the can is opened and is elastically restored while sounding when it is opened is provided at the bottom of the can lid or a seamless can.
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