Metal deforming – By use of closed-die and coacting work-forcer – Cup or shell drawing
Reexamination Certificate
2004-12-06
2008-03-04
Suhol, Dmitry (Department: 3725)
Metal deforming
By use of closed-die and coacting work-forcer
Cup or shell drawing
C072S379400
Reexamination Certificate
active
07337646
ABSTRACT:
A method and a device for manufacturing a synthetic resin coated metal can body capable of drawing and ironing the synthetic resin coated metal can body with a large processing quantity without causing can body breakage. First and second ironings are conducted to the side wall of a redrawn can (20) formed by drawing a thermoplastic resin-coated aluminum sheet (1) on both surfaces by a first ironing die (14) and a second ironing die (15) in that order according to the pressing-in of a punch (11) with such processing quantities that sheet thickness reduction ratios from an original sheet thickness come within the rages of 35 to 55% and 60 to 75% respectively for manufacturing a metal can body. Since the coated layer of a thermoplastic resin acts on a metal body in a direction for preventing the metal body from being broken (ruptured), processing conditions for ironing are relieved, and even if an ironing with a high sheet thickness reduction ratio is performed, an ironing capable of maintaining quality is allowed without causing the can body breakage in a first step can (21) and a second step can (22).
REFERENCES:
patent: 2611475 (1952-09-01), Slater
patent: 4541265 (1985-09-01), Dye et al.
patent: 4962659 (1990-10-01), Imazu et al.
patent: 5105645 (1992-04-01), Kobayashi et al.
patent: 5179854 (1993-01-01), Matsui et al.
patent: 5249447 (1993-10-01), Aizawa et al.
patent: 5333484 (1994-08-01), Mine et al.
patent: 5544517 (1996-08-01), Shimizu
patent: 5778722 (1998-07-01), Saiki et al.
patent: 6857304 (2005-02-01), Enoki
patent: 1517732 (1978-07-01), None
patent: 2002-178049 (2002-06-01), None
patent: 2003-19518 (2003-01-01), None
International Search Report mailed Mar. 22, 2005 of International Application PCT/JP2004/018126.
Aoyagi Mitsuhiko
Saiki Norihito
Tomaru Hidekazu
Suhol Dmitry
Toyo Seikan Kaisha Ltd.
Westerman, Hattori, Daniels & Adrian , LLP.
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