| 摘要 |
PROBLEM TO BE SOLVED: To provide a hermetic vessel to store liquid such as beverage which has a plastic cap of high barrier property and excellent hermetic property even when the vessel is heated to around 80°C. SOLUTION: The cap 20 has a contact ring 26 on a lower side of a top surface part 22 between a cylindrical skirt part 23 and a cylindrical inner ring 24 and an outer ring 27 on an inner root part of the cylindrical skirt part 23. In a body vessel 10, by fitting the cap 20 into a neck part to close an opening part 16, at least an inner side of a vertical wall body 12 of the neck part 11 of the body vessel 10 is brought into line-contact in section with the cylindrical inner ring 24, a horizontal top plate part 14 of the neck part 11 of the body vessel 10 is brought into point-contact in section with the contact ring 26, and a round part 15 of the horizontal top plate part 14 of the neck part 11 of the body vessel 10 is brought into point-contact in section with the outer ring 27. COPYRIGHT: (C)2004,JPO
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