| 摘要 |
A closure for a container for a viscous liquid, where the liquid is dispensed by squeezing the container, contains a nozzle. The nozzle includes a converging section 12, a throat section 14, and a diverging section 16, and the liquid passes through these sections in this order when being dispensed. The liquid is thus subject to the venturi effect as it passes through the nozzle, such that the pressure in the throat is less than the pressure in the diverging section. As a result of this lower pressure; liquid in the throat is pushed back into the container when pressure on the container is released. The converging section reduces in a smooth taper and the diverging section increases in a smooth taper. The nozzle may be integrally formed as part of the closure (see fig 3) and may have a cap integrally hinged thereto. |
