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    • 4. 发明授权
    • Tamper evident closure
    • 篡改明显的封闭
    • US5190175A
    • 1993-03-02
    • US896401
    • 1992-06-10
    • Frank J. Schmidt
    • Frank J. Schmidt
    • B65D55/02B65D55/06
    • B65D55/066B65D55/026
    • In accordance with the present invention, an irreversible tamper evident system for a closure such as a button closure is provided. The irreversible tamper evidence system is provided by an appearance change system carried by the flexible button portion of the closure. The appearance change system comprises a liquid crystal material and a liquid crystal poison. When the button is depressed such as upon initial closure of the container, the liquid crystal material is separated from the liquid crystal poison and optical properties of the liquid crystal material are viewable. When the container is opened the flexing the button forces the liquid crystal poison into contact with the liquid crystal material and the optical properties of the liquid crystal material are irreversibly altered.
    • 根据本发明,提供了一种用于诸如按钮闭合件的封闭件的不可逆显窃启系统。 不可逆的篡改证据系统由封闭件的柔性按钮部分承载的外观改变系统提供。 外观改变系统包括液晶材料和液晶毒物。 当按钮被按压时,例如在初始关闭容器时,液晶材料与液晶毒物分离,液晶材料的光学特性是可见的。 当容器打开时,按钮使按钮迫使液晶毒物与液晶材料接触,并且液晶材料的光学特性不可逆地改变。