发明名称 IRREVERSIBLE TAMPER INDICATOR FOR MECHANICAL BUTTON CAP
摘要 <p>A closure (10) having a mechanically actuated button (26) with a tamper indicating arrangement. A transparent panel (34) overlies the closure. Message indicia (32) is provided either on the upper surface of the button or the under surface of the transparent panel. A pleated screen (36) shields the message indicia either by overlying the same or by blending with the message indicia in color. One end of the pleated screen is fixedly attached to the transparent panel while the opposite end has a releasable bond. When the closure is applied, the pleated screen is clamped between the closure and the transparent panel resulting in the pleated screen being flattened and elongated, rupturing the releasable bond so that once the closure is removed from the container and the button moves down away from the transparent panel, the pleated screen can collapse exposing the message indicia thereby indicating prior removal and replacement of the closure.</p>
申请公布号 WO1992004246(A1) 申请公布日期 1992.03.19
申请号 US1991006264 申请日期 1991.08.30
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