| 摘要 |
A manually operated pump dispensing device is provided for dispensing a liqu id product. The manually operated pump dispensing device includes a container (10) for storing the liquid product, a dispensin g pump (30) and a gas-permeable/liquid-impermeable vent (70). The container (10) has an interior chamber (12) and an exterior that is exposed to the environment. The dispensing pump (30) is attached to the container (10) in fluid communication with the liquid product. The dispensing pump (30) has a discharge orifice (40) and an actuator (50). The gas-permeable/liquid-impermeable vent comprises a venting module (82) that includes a membrane (84) and a support frame (86). The membrane (84) is gas-permeable/liquid-impermeable and is affixed onto the support frame (86) such that the membrane surrounds the support frame. The vent allows for communication between the interior chamber and the environment, thereby passively venting the container. |
