Photochemical frangible closure

A frangible closure has a closure sheet having a central weakness formed substantially though a medial portion. The central weakness has a thickness and a central portion of greater thickness than the thickness of the central weakness so as to resist shearing of the central weakness. A lateral skirt...

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Bibliographische Detailangaben
Hauptverfasser: JOHNSON GERALD L, HOOVER LINN C, SCHWALLIE SCOTT H, RZEPKA JOHN M
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A frangible closure has a closure sheet having a central weakness formed substantially though a medial portion. The central weakness has a thickness and a central portion of greater thickness than the thickness of the central weakness so as to resist shearing of the central weakness. A lateral skirt surrounding the closure has at least a partial radial weakness therebetween for cooperating with the central weakness and enabling the central weakness to fracture.