Title:
ボトル缶の製造方法
Document Type and Number:
Japanese Patent JP7112648
Kind Code:
B2
Abstract:
To produce a thin-wall bottle can while preventing occurrence of buckling.SOLUTION: A method for production of a thin-wall bottle can comprises: a DI press process of molding a bottomed cylindrical body in which a bottom and a cylindrical part are formed by applying re-squeezing, an iron process and a bottom molding process to a cup-shaped material molded by a squeezing process from an iron plate; a bottle neck molding process of molding a shoulder part 6 and a neck part 7 diameter-reduced as heading for an upper end side from the shoulder part 6; and a cap fitting part-molding process of molding the cap fitting part to the upper end part of the neck part 7. In the bottle neck molding process, the neck part 7 is molded by stepwise in several times, diameter-reducing a portion excluding the portion connected to the shoulder part 6 in a cylindrical part formed at the upper end side of the shoulder part 6 from d0 into d2 in diameter. One time amount of diameter reduction is made to be in a rage of 0.5 to 1.5 mm.SELECTED DRAWING: Figure 6
Inventors:
Kotaro Shimada
The end
The end
Application Number:
JP2020184600A
Publication Date:
August 04, 2022
Filing Date:
November 04, 2020
Export Citation:
Assignee:
Artemira Can Manufacturing Co., Ltd.
International Classes:
B21D51/26; B21D22/28; B65D1/02
Foreign References:
| US5713235 | ||||
| US5572893 | ||||
| US5297414 |
Attorney, Agent or Firm:
Yasushi Matsunuma
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami