| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cap for a vessel opening, which achieves better workability compared with the prior art in an automatic packing process by a machine. <P>SOLUTION: In the cap 101 for opening of the vessel including a top plate 111, a tubular part 121 and an inner ring 131 and forming a seal in a contact of the inner ring with the opening while being covered and screwed on the opening of the resin-made vessel by the machine, the inner ring sags from the inner surface 111a of the top plate at a height 131H approximately corresponding to the lower surface 124a of the first screw thread 124 formed in a tubular part. <P>COPYRIGHT: (C)2011,JPO&INPIT |
