초록 ▼

An easily-opened can lid includes a cover ring having an outer edge and an inner edge. The inner edge folds inwardly to form an annular flange surrounding a lid opening. A tear-off portion aligned about the annular flange has a lateral area covering the entirety of the lid opening such that the lid

An easily-opened can lid includes a cover ring having an outer edge and an inner edge. The inner edge folds inwardly to form an annular flange surrounding a lid opening. A tear-off portion aligned about the annular flange has a lateral area covering the entirety of the lid opening such that the lid opening is smaller than the tear-off portion. An attachment tab is secured at a location on the lateral area of the tear-off portion and an opening ring is secured to that attachment tab. An outside edge of the tear-off portion can be aligned with the inside edge of the cover ring so that the annular flange is entirely covered by the lateral area of the tear-off portion. Heat sealing coatings can be applied to the lateral area of the tear-off portion on a bottom side thereof and to the top side of the annular flange to secure the cover ring to the tear-off portion.

대표청구항 ▼

[ What is claimed is:] [1.] Easily-opened can lid comprising a cover ring formed by shaping of a sheet metal blank and stamping out the sheet metal portion surrounded by the cover ring, and which has on its outer edge an outer rim for forming a double seam, and on its inner edge an annular flange fo

[ What is claimed is:] [1.] Easily-opened can lid comprising a cover ring formed by shaping of a sheet metal blank and stamping out the sheet metal portion surrounded by the cover ring, and which has on its outer edge an outer rim for forming a double seam, and on its inner edge an annular flange formed by a flat-pressed roll curl, surrounding a lid opening, a tear-off portion closing the lid opening being attached by heat-sealing to the annular flange, wherein the cover ring and the tear-off portion are manufactured from the same sheet metal blank provided on one side with a heat-sealable coating, wherein the tear-off portion is formed by the stamped-out sheet metal portion stamped out from the common sheet metal blank when forming the cover ring and wherein the roll curl is so shaped and pressed flat to the annular flange, that the final can opening is smaller-than said stamped-out sheet metal portion forming the tear-off portion and its lateral area and the annular flange mutually overlap.