Method of drawing and ironing a resin film laminated metal sheet and resin film laminated drawn and ironed can using the same method
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United States of America Patent
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Apr 9, 2013
Grant Date -
May 7, 2009
app pub date -
Nov 4, 2005
filing date -
Nov 4, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A method of drawing and ironing a resin film laminated metal sheet for forming a can body having a bottom portion, a can wall portion and a flange-forming portion by drawing the resin film laminated metal sheet obtained by laminating at least one surface of a metal sheet with an organic resin film, followed by ironing by using a punch and a plurality of dies neighboring each other. The can wall is effectively prevented from being broken by a decrease in the thickness of the can wall, and drawn and ironed cans are efficiently formed having a thickness which is decreased as designed.
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