| 摘要 |
A dispenser (1) with a hermetic seal includes a hollow containment body (2) which can be inserted in a bottle, a lower suction tube (5), a piston (7) slidable inside the containment body (2), a hollow stem (6) axially slidable inside the containment body (2), a sealing valve (8) inserted in a bottom portion (4) of the containment body (2) and interposed between the suction tube (5) and the dosing chamber (11). The sealing valve (8) is cup-shaped and the piston (7) has a lower sealing portion (7b) configured in such a way as to interact in compression with an upper edge (8a) of the sealing valve (8) making a hermetic seal between the sealing valve (8) and the piston (7). |
