| 摘要 |
<p>A cover (1) for receptacles (R) comprising a shaped body (2) made of flexible sheet material, provided with a peripheral groove (3) adapted to sealingly couple with the edge (B) which delimits the mouth of the receptacle (R), and a concave area (4) made on its internal surface (1a) facing towards the interior of said receptacle (R), closed by means of a rupturable membrane (5). Thus a containment chamber (6) is defined for a substance (S) to be added to the contents of said receptacle (R). A projecting element (7) is present on the internal surface (4a) of the concave area (4), facing towards the rupturable membrane (5) and adapted to rupture the membrane (5) when pressure is applied on the cover.</p> |
