| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-piece cap wherein the capping property when being screwed with the mouth section of a bottle is favorable, the bottle sealing/ opening rotating angle of the cap when the cap is unscrewed from the mouth section of the bottle is small, a large opening torque force is not required, and a material of which the packing property is favorable can be used for the internal plug. SOLUTION: This two-piece cap 10 comprises a cap main body 100 which is screwed with and fitted on the mouth section 21 of the bottle 20, and the internal plug 200 which is inserted under the internal surface of the top plate 110 of the cap main body, and has sealing rings 211 and 212 on the lower surface. In such a two-piece cap 10, on the outer peripheral surface of the internal plug base plate 210 of the internal plug, a plurality of thinner blade-form supporting sections 213 are extended in the horizontal direction with an equal interval. Then, when the internal plug is fitted in the cap main body, the blade- form supporting sections are bent downward along the inner peripheral surface of the cap main body. Also, at least one distal end of the blade-form supporting sections is brought into contact with the upper end of the screwing section 121 of the cap main body. |
