Method of forming a safety can end
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 30, 2002
Grant Date -
N/A
app pub date -
Jun 30, 2000
filing date -
Jun 30, 2000
priority date (Note) -
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Abstract
A method of making a pressure-resistant easy-open end for a container is performed on a conventional easy-open end of the type that has a double-seaming portion, an end panel and a safety fold. The safety fold as is conventional includes an intermediate panel that is unitary with and overlies the end panel and that is connected to the end panel by a first bead, a top panel that is unitary with and overlies the intermediate panel and that is connected to the intermediate panel by a second bead, and a transition region that is unitary with and connects the top panel to the double-seaming portion. The method involves performing an operation on the conventional end so that the top panel is reformed to reside substantially within a second plane and so that the first and second planes intersect at the end panel at a location that is radially inward from said first bead. The result is a modified easy-open end that exhibits markedly improved resistance against pressure-induced failure.
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