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AssigneeContinental White Cap, Inc.
InventorsRobert J. Heilman, Mark Egger, Leonard Rozanksi, H. Darrell Iler
Estimating the term…
This relates to a color change system to be incorporated in a flexing area of an end panel of a closure. The color change system includes a dark background coating on a flexing portion of the closure end panel to which there is bonded by way of an adhesive such as a varnish, ink or coating a brittle layer which due to the flipping action of the flexing portion of the end panel will fracture. The brittle layer is preferably of a light color and is colored utilizing a fluorescent dye. The combination of the background color and the fluorescent color of the brittle layer produces a first color in the original closure and when the end panel flexes and the brittle layer fractures to not only crack but also tear apart or delaminate from itself, to reflect its own light color much more brilliantly, the color of the color change system drastically changes to indicate tampering. This color change is irreversible. The color change system may also include a message indicia.
A closure including a flexible end panel having formed therein a sealing state indicating area, and an irreversible tamper indicating system carried by said end panel area and actuable by said area flipping from a seal indicating position back to an initial position due to energy stored within said end panel, said tamper indicating system including a brittle layer rupturable in response to flipping of said end panel area, said brittle layer having a first color when said brittle layer is whole and a second color when said brittle layer ruptures.
A closure including a flexible end panel having formed therein a sealing state indicating area, and an irreversible tamper indicating system carried by said end panel area and actuable by said area flipping from a seal indicating position back to an initial position due to energy stored within said end panel area, said tamper indicating system including a brittle area rupturable in response to flipping of said end panel, said end panel having a dark background beneath said brittle layer and said brittle layer having a light color whereby said end panel area has a first color when said brittle layer is whole and a second color when said brittle layer fractures due to flipping of said end panel.
Dependencies are inferred from the claim text.