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Title:
STOPPER OF PAPER CONTAINER FOR LIQUID
Document Type and Number:
Japanese Patent JP3791243
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a stopper of paper container for liquid in which a contact ring and an inner ring can be installed even at such a plug as one having a quite small outer diameter or a stopper having a special function, and further a positive sealing of the container is attained when the container is sealed.
SOLUTION: There is provided a stopper comprised of a spout 100 and a cap 200 fitted to the spout. An inner circumference side of an opening at an upper end of a pouring cylinder of a spout is formed with a concave notch 111. A contact ring 211 is arranged at the lower surface of a top plate of a cap and an inner ring 212 is arranged adjacent to the inner side of the contact ring. When a cap is installed at the spout, the contact ring of the cap is closely contacted with the upper surface of the opening of the spout, the inner ring of the cap is fitted into the concave cavity at the opening of the spout to cause the outer circumferential surface of the inner ring at the cap to be closely contacted with the inner circumferential surface at the opening of the spout.


Inventors:
Akitaka Iwasaki
Noriichi Kakinoki
Application Number:
JP16082099A
Publication Date:
June 28, 2006
Filing Date:
June 08, 1999
Export Citation:
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Assignee:
Toppan Printing Co., Ltd.
International Classes:
B65D5/63; B65D5/74; B65D39/08; B65D41/04; B65D47/36; B65D51/22; (IPC1-7): B65D5/63; B65D39/08; B65D41/04; B65D47/36; B65D51/22
Domestic Patent References:
JP63169425U
JP56172556U
JP7156955A
JP59193145U