| 摘要 |
<p>A composite lid for containers which comprise a tubular body (10) carrying an annular upper wall (20) made of sheet metal, in which is defined an opening (A) surrounded by a seat (21), which is configured to receive and retain a lid (30), which comprises a base portion (31) peripherally incorporating a retention portion (32) to be seated and retained on the seat (21), when the lid (30) is closed. The base portion (31) of the lid (30) comprises: a peripheral annular element (33) molded in plastic material, in a single piece with the retention portion (32); and a central element (34) in the form of a sheet metal plate and having an outer peripheral edge (34a) attached to the peripheral annular element (33). The peripheral annular element (33) may incorporate, internally and in a single piece, a central panel (33d), disposed on the central element (34), which may be incorporated to the lid during its injection or attached thereto afterwards.</p> |
