Title:
ネジ付きボトル型缶およびその製造方法
Document Type and Number:
Japanese Patent JP7048361
Kind Code:
B2
Abstract:
A bottle-shaped can in which flatness and circularity of a neck portion are improved. An upper incomplete thread portion is formed at an upper end of a thread. A height of the upper incomplete thread portion is shorter than an average height of the thread, and increases gradually toward the average height. A length of the upper incomplete thread portion between a first point and a second point is set in such a manner that an angle between a line drawn between the first point and a center point of the neck portion, and a line drawn between the second point and the center point of the neck portion falls within a range from 20 degrees to 60 degrees.
Inventors:
Yasushi Enoki
Osamu Yoshida
Osamu Yoshida
Application Number:
JP2018044312A
Publication Date:
April 05, 2022
Filing Date:
March 12, 2018
Export Citation:
Assignee:
Daiwa Seikan Co., Ltd.
International Classes:
B21D51/38; B21D51/40; B65D1/02
Domestic Patent References:
| JP2004074170A | ||||
| JP2004035036A | ||||
| JP2004074169A | ||||
| JP2017061346A |
Attorney, Agent or Firm:
Watanabe
Kikuhiko Nakamoto
Kikuhiko Nakamoto
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