Method for expanding the diameter of a metal container
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United States of America Patent
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Jul 11, 2017
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N/A
app pub date -
Dec 20, 2012
filing date -
Dec 22, 2011
priority date (Note) -
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Abstract
A method of forming a metal container comprises: curling outward a top edge of the metal container to form a curl and expanding a diameter of a first section of the metal container to form a first expanded section; wherein at least part of the first expanded section is below the curl. In some embodiments, the steps of curling outward a top edge of the metal container to form a curl and expanding a diameter of a first section of the metal container to form a first expanded section are performed in a single stroke of a single die. In some embodiments, the step of expanding a diameter of a first section of the metal container to form an expanded section is performed after the step of curling outward a top edge of the metal container to form a curl.
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