| 摘要 |
The present invention comprises a metal lid usually constituted by a circular panel (1), endowed with downward short turned rim or skirt (2) and provided in its inner peripherial circunference of a circular groove containing a sealing gasket (3), having a circular concave depression (4) disposed preferably in a central portion of the panel (1), wherein is formed a central hole (5), seeing that in a lateral portion or sector from this circular depressed area (4) is applied a film of high-adherence varnish, being furthermore filled up with a adherent thermoplastic and melting material-former of the seal (7), such material that penetrate in the hole (5) forming a short vertical rod (8), which does not extravasate the hole (5) and remains with its end close and at the same plane of the internal and inferior surface of the panel (1) of the lid without forcing any portion or residue of the material in the inferior part of the hole (5); seeing that, the film of high-adherence varnish (6), applied in a lateral part or sector of the circular depression (4), allows the partial retention of the seal (7) on the occasion of its lifted slightly and release of the relief hole (5), and the reapplying after the first opening of the packing. <IMAGE> |
