Package making – Methods – Forming a cover adjunct or application of a cover adjunct to...
Patent
1995-05-04
1996-12-10
Culver, Horace M.
Package making
Methods
Forming a cover adjunct or application of a cover adjunct to...
53420, 53487, B65B 728, B65B 6126, B65B 320, B65B 505
Patent
active
055819788
ABSTRACT:
In accordance with the present invention, an irreversible tamper evident system for a button closure is provided. The irreversible tamper evident system is provided by a color change system carried by the flexible button portion of the closure. The color change system comprises an indicator coating over a dark colored substrate coating. The indicator coat is preferably colored with a light colored transparent colorant such as an orange colored fluorescent dye. The indicator coat is preferably a liquid material which can be cured by evaporation, heat, UV irradiation or the like, to form a solid layer. When the substrate layer and indicator layer are in intimate contact, a first color is observed. Depending upon the relative colors used for this substrate and indicator layers, this first color can be a combination of the colors of the two layer or can be primarily the color of the substrate layer. However, when the layers become separated and the outer layer is spaced from the inner layer, a second color is observed which second color is primarily the color of the indicator coat.
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Ann Landers column, "The Richmond county Daily Journal," Rockingham, NC, Jun. 29, 1995 issue, p. 12.
Bialka Daniel P.
Hekal Ihab
Iler Howard D.
Kiss Bradley C.
Continental White Cap Inc.
Culver Horace M.
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