| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable vessel of a mouthpiece cap for a PET bottle in which the mouthpiece cap can be used for the PET bottle of 500 and 350 milliliter size with one kind of straw, the mouthpiece cap can be used irrespective of the size of a spout of the PET bottle, and the mouthpiece cap and the straw can be carried in a compact and sanitary manner. SOLUTION: An outer screw part of a cylindrical vessel body 2 is fitted to a screw of the cap for the PET bottle for beverage, and the cap and the mouthpiece cap 3 can be used in a replacing manner, the vessel body is formed so that the expandable straw 14 is bent in a U-shape from a substantially center part, an outer screw part of the vessel body forms a small screw part, and an inner screw part of the mouthpiece cap forms a large screw part. An outer screw part of an adapter forms a large screw part, and an inner screw part thereof forms a small screw part so that the mouthpiece cap or the cap can be connected to the outer screw part of the vessel body or the PET bottle via the adapter 4 corresponding to each screw size. |
