| 摘要 |
A tamper indicating closure including a transparent outer cap and an inner insert disc with an integral depending plug seal which relies on the relative movement of the outer cap and the inner disc during opening movement to indicate tampering of the container after it has been sealed for the first time. The relative movement is insured by the fact that the plug seal coacts with the container to resist rotation of the insert disc maintaining the container in a sealed condition while the outer cap is being rotated in an opening direction. The inside top surface of the clear outer cap is printed with a message such as "OK" or "SECURE" in an ink which is removable by a wiping action. The upper surface of the disc has ridges or wipers which remove all or part of the message upon initial opening. During the initial application of the closure to the container, friction between the plug seal and the container keeps the outer cap and insert disc together through cooperating drive lugs as the closure is screwed onto the bottle so that the message is undisturbed. |
