| 摘要 |
<p>1. A gastight-closing double fold closure between the body and the bottom or lid of cans, particularly deep drawn or stretch formed cans made of tin plate or aluminium sheet, wherein the peripheral flange of the can body is connected to the fold edge of the lid to form a double fold closure with the hooked portions of the lid and body overlapping within the seam, and the quotient from the division of the nominal diameter of the lid by the length of the hooked portion of the lid is equal to or greater than 30, characterised in that, in the closure, the peripheral flange of the can body and the fold edge of the lid and/or the bottom are connected to one another without the use of a sealing means.</p> |
