| 摘要 |
<p>A device (100) for dispensing a substance comprising a chamber (400) with walls having a combination of at least a strong seal (102) and at least a weak seal (101a, 101, 103, 103a) wherein the weak seal (101a, 101, 103, 103a) bridges the walls (105) of a spout (200). The spout (200) guides the substance to the at least a weak seal (101a, 101, 103, 103a). The spout (200) is defined by having at least a wall (105) formed by the at least a strong seal (102) extending inwardly from the at least a weak seal (101a, 101, 103, 103a). When the spout (200) has a plurality of weak seals (101a, 101, 103, 103a), at least a buffer chamber (300) is formed between the weak seals (101a, 101, 103, 103a). The discharging end of the spout (201) has an outermost weak seal (101a). The device (100) dispenses the substance when an external pressure is applied to the chamber (400).</p> |
