METHOD OF MAKING AEROSOL VALVE MOUNTING CUPS AND RESULTANT CUPS
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United States of America Patent
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app pub date -
Dec 17, 2008
filing date -
Jun 18, 2007
priority date (Note) -
Abandoned
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Abstract
Metal discs, preferably circular, are cut to a precise diameter and drawn to a preform with a channel and skirt for an aerosol valve mounting cup. The preform then undergoes further forming operations at the stations in a press system. “Bumping” is carried out on the skirt edge at a station, to eliminate non-burr trimming of the cup edge, save material and obtain a carefully controlled skirt height and a substantially even skirt edge with minimized earring. The resultant cup terminating skirt edge is characterized by reformed metal. A further coaxing or pinch-cut operation may be performed on the cup skirt.
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