| 摘要 |
PCT No. PCT/DE95/01574 Sec. 371 Date May 13, 1997 Sec. 102(e) Date May 13, 1997 PCT Filed Nov. 14, 1995 PCT Pub. No. WO96/15036 PCT Pub. Date May 23, 1996An improvement in the shape of a fold in a tin can allows the use of sheet metal of lower gauge than that currently used. This is achieved with a fold geometry on a tin can which is closed off with a double fold, such as for a drink or food tin; by providing a continuous or stepped contour on the fold side; and by insuring that the lid hook is clearly in area-contact (positive fit) on its outer side with the free end of the body hook in its lower third. The invention may be applied to standard-gauge as well as thinner-gauge sheet metal, and generally results in a better seal.
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