Tamper Evident Security Labels
AssigneeAvery Dennison Corporation
InventorAnil Kumar DUBEY
Life of this patent
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Abstract
Labels and multilayer adhesive assemblies and laminates are described that contain one or more tamper indicating layers. After adhering to a surface of interest, upon attempted removal of the label from the surface or other manipulation of the label, the label separates along the tamper indicating layer. One or both exposed faces of the separated tamper indicating layer may include tamper indicating and or authenticity indicating provisions such as indicia to further provide evidence of attempted tampering.
Claims18
An adhesive laminate configured to provide indication of tampering, the laminate comprising:
- an outer layer defining an outer face;
- a first adhesive layer adjacent to the outer layer;
- a tamper indicating layer adjacent to the first adhesive layer;
- and
- a second adhesive layer adjacent to the tamper indicating layer;
- wherein the first adhesive layer is disposed between the outer layer and the tamper indicating layer, and the tamper indicating layer is disposed between the first adhesive layer and the second adhesive layer;
- wherein the tamper indicating layer is configured such that the tamper indicating layer at least partially separates along a separation plane or separation interface within the tamper indicating layer to thereby provide indication of tampering when there is any manipulation of the laminate.
An adhesive laminate comprising:
- an outer layer defining an outer face, the outer layer including a paper or polymeric material;
- a tamper indicating layer, the tamper indicating layer including one or more interior weak materials;
- a pressure sensitive adhesive layer disposed immediately adjacent to the tamper indicating layer, wherein the tamper indicating layer is disposed between the outer layer and the pressure sensitive adhesive layer;
- and
- tamper indicating and or authenticating provisions disposed within or on top of the tamper indicating layer;
- wherein the tamper indicating layer is configured such that the tamper indicating layer at least partially separates along a separation plane or separation interface within the tamper indicating layer when there is any manipulation of the laminate and at least a portion of the tamper indicating and or authenticating provisions disposed within the tamper indicating layer are exposed along the separation plane or separation interface to thereby provide indication of tampering and or authentication.
A method of providing indication of tampering along a container region, the method comprising:
- providing an adhesive laminate including (i) an outer layer, (ii) a first adhesive layer adjacent to the outer layer, (iii) a tamper indicating layer that includes one or more interior weak materials, and (iv) a second adhesive layer, wherein the tamper indicating layer is disposed between the first and the second adhesive layers;
- adhering the second adhesive layer of the laminate to the container region of interest;
- whereby upon subsequent manipulation of the laminate, the tamper indicating layer at least partially separates along a separation plane or separation interface within the tamper indicating layer to thereby provide indication of tampering.
Dependencies are inferred from the claim text.