| 摘要 |
A tear-off opening device for drink cans by means of a tab (1) with grip device (2) for tearing, comprising, underneath the tab (1), a shaped lamina (4), secured underneath the lid (6) for a segment (41) which partially surrounds the edge of the opening (3), whilst at least a remaining segment (42) stays free, said lamina (4) having a conformation that is able to vary from a first stable configuration in which, with the can closed, it is drawn up underneath the tab (1), to successive and transitory configurations that take place during the extraction of the lamina (4) through the opening (3) a nd to a final stable configuration in which, with the extraction completed, the lamina (4) constitutes a stable spout (8) with related opening (9) whose fre e edges belong to the free segment (42) of the lamina (4).
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