| 摘要 |
A thin film valve including a flexible thin film front panel, a flexible thin film rear panel sealed to the front panel along two opposite sides thereof to form a normally closed, self-sealing thin film valve having an openable duct, the duct having first and second open ends, the first end of the duct being openable into a container sealingly affixed to the valve, and a frangible seal sealing the second end of the duct between the two sealed side edges. |
