FIELD: packaging industry.
SUBSTANCE: beverage container closure (5) comprises the main assembly (9), which is provided with the beverage hole (32) and the annular element (37), and the valve assembly (20) for locking or unlocking the passage to the beverage orifice (32) on the side of the beverage container in the closure device (5). Valve assembly (20) comprises the valve member (26) that has a sleeve (60) and the slot (42), wherein the circumference of the sleeve (60) is substantially the same as the circumference of the annular element (37). Leakage resistance of the valve unit is further improved by the fact that the sleeve (60) and the annular element (37) have the first diameter in the direction of the slot (42) and the second diameter perpendicular to the slit (42), where the ratio between the first and second diameters of the sleeve (60) is smaller than the ratio between the first and second diameters of the annular element (37).
EFFECT: improved leak resistance.
4 cl, 6 dwg
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RU2457994C2 |
