发明名称 |
METHOD AND DEVICE FOR INSPECTING LIQUID CONTAINER |
摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device for inspecting a liquid container such as a paper cup, used for quantitatively measuring an infinitesimal leak of gas from a liquid container such as a paper cup to determine whether it is not more than an infinitesimal amount of leak not hindering use as a container. SOLUTION: The liquid container 1 such as a paper cup with its mouth part sealed excluding an air inlet port is disposed in a chamber 4 equipped with an air supply port 2 connected to an air supply source 5 and an air exhaust port 3. Air having a prescribed pressure is continuously introduced into the container for a prescribed period of time. Air leaking into the chamber through the wall of the container is introduced into water to form air bubbles 9. The bubbles are detected by a bubble detecting sensor 10 capable of outputting a detection result as an electrical signal. The output of the sensor is processed by a computer 12 to find the quantity of bubbles generated. The quantity of bubbles generated is compared with a prescribed threshold. Whether or not the container is defective is determined depending on whether or not the quantity exceeds the threshold.
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申请公布号 |
JP2002168725(A) |
申请公布日期 |
2002.06.14 |
申请号 |
JP20000364463 |
申请日期 |
2000.11.30 |
申请人 |
DAINIPPON PRINTING CO LTD |
发明人 |
NAGAOKA YURIKO;KONO MICHIO |
分类号 |
G01M3/06;(IPC1-7):G01M3/06 |
主分类号 |
G01M3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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