Document Type and Number:
Japanese Patent JPS5353659
Kind Code:
Y2
Abstract:
An improvement in a can end closure having a substantially flat, imperforate central wall with a peripheral flange adapted to be interfolded with an edge flange of a can body to form a double-seam whose top portion is disposed above the central wall, a peripheral score defining a removable panel in the central wall, and an opening tab having a nose portion at the outer end adjacent the peripheral score and a handle portion at the inner end thereof, said tab being secured to the removable panel by a securement adjacent the nose portion. The improvement inhibits the raising of the tab when internal pressure is applied to the can and comprises a chamber and stress in the tab extending from at least about the securement to about the handle portion and a corresponding raised area of stress in the panel disposed beneath the cambered area of the tab. The stress in the raised area of the panel is caused by the cambered tab, after its being fastened to the panel, seeking to revert to its unstressed position existing prior to its fastening to the panel.
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Application Number:
JP7742274U
Publication Date:
December 21, 1978
Filing Date:
July 01, 1974
Export Citation:
International Classes:
B65D47/36; B65D; (IPC1-7): B65D17/18