| 摘要 |
<P>PROBLEM TO BE SOLVED: To conduct, with a high degree of accuracy, an inspection of inner pressure of a contents-filled bottle can with a cap. <P>SOLUTION: The cap 10 has a cap body 10a provided with a ceiling plate portion 11 and a periphery wall portion 12 approximately vertically hanging down from the periphery rim portion 11e of the ceiling plate 11, and a liner 10b disposed inside the cap body 10a, while, at least the region of the liner 10b which corresponds to the periphery rim portion 11e of the ceiling plate 11, is in the state of not in contact with the inside face of the ceiling plate 11. The liner 10b is made to have a form of a circular ring, whose inner diameter ϕD is made smaller than the inner diameter ϕC of the corresponding region (the periphery rim portion 11e), and at least its inner position further inside from the corresponding region (the periphery rim portion 11e) in a radial direction is bonded to the inside face of the ceiling plate portion 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
