To provide a new three-piece rectangular can which is excellent in liquid leakage preventive property, strength of the can body, heat dissioation property, etc. as a battery and a case for electrical equipment by eliminating the problem (defect of joining) in the joined part of a can body in the three-piece can and also eliminating the problem that a two-piece can is insufficient in its strength.
After forming a blind circular can K by performing deep drawing of a circular blank made of an aluminum sheet 10 at least on one side of which a organic film 12 is formed so that the organic film 12 is the inside of a can and making it into a cylinder D2 having seamless side face by cutting the can bottom 1a of the blind circular can K, by forming a rectangular body part 1 having seamless side face by deforming the cylinder D2 into a rectangular shape, forming a necked part 1n by applying necking to the opening parts of both ends mounting a top lid 2 and a bottom lid 3 to the opening part of the both ends by performing double seaming on both ends through an organic compound by performing double seaming, the three-piece rectangular can is made through an organic compound.
COPYRIGHT: (C)2007,JPO&INPIT
Shinichi Kaneda
Naro Shirane
Yasuda Norifumi
Hisashi Kato
Iwata Manabu
Kouichi Yamamoto
Honda motor industry stock company
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| WO2004113181A1 |
Akio Ota
Asako Ota