| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cap seal and a doubly-sealing apparatus of a container such as a drum using the same, which execute a reliable sealing function of a cap part of the container such as the drum, double sealing of the cap part of the container such as the drum due to the cap seal is fully performed despite various errors such as the difference in the curling external diameter of the cap part of the container, the quality of the content is prevented from being damaged, and thereby the cap seal is simply and reliably opened. <P>SOLUTION: On the inside of the annular drooping wall 4 of a cap seal body 1, an external narrow pressed portion for seal 10 having the cross section that is the approximate lateral V-shape is formed. When placing the cap seal, an upper end folding annular external convex part 31a of the fixed cap 31 of the container such as a drum is forcibly fitted to the inside of the narrow pressed portion for external seal 10 having the cross section that is the approximate lateral V-shape so as to open the cross section that is the approximate lateral V-shape of the narrow pressed portion for external seal 10. The annular external convex portion 31a is narrowly pressed at two contact points P and Q by a power of restitution of an elastic material of the cap seal, so that the external sealing is carried out. <P>COPYRIGHT: (C)2010,JPO&INPIT |
