Materials and construction for a tamper indicating radio frequency identification label
First Claim
1. A flexible tamper indicating transponder comprising a flexible transponder and an adhesion modifying coating having a composition comprising 5–
- 97% polymer, 0–
80% solvents, and 0.01–
1.0% defoamer.
5 Assignments
0 Petitions
Accused Products
Abstract
Materials and construction for a tamper indicating radio frequency identification (RFID) label are provided to permit the destruction of the label or its properties in the event of attempts to remove the label from a surface to which it has been applied. An adhesion modifying coating is applied to a label surface or portions thereof to affect the relative adhesion strengths between different layers or areas of the label. The adhesion modifying coating can be applied in selected patterns to achieve differential adhesion strengths and resulting differential separation of the label from a surface on which it has been applied.
179 Citations
48 Claims
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1. A flexible tamper indicating transponder comprising a flexible transponder and an adhesion modifying coating having a composition comprising 5–
- 97% polymer, 0–
80% solvents, and 0.01–
1.0% defoamer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 29, 30, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
- 97% polymer, 0–
- 25. A method for applying an adhesion modifying coating in a predetermined pattern on a tamper indicating transponder comprising an additive printing process.
- 27. A method for applying an adhesion modifying coating in a predetermined pattern on a tamper indicating transponder comprising a subtractive printing process.
- 31. An adhesion modifying coating for a tamper indicating transponder, said coating affecting the destruction of an electrically conducting material in said transponder, wherein said coating is applied before the application of said electrically conducting material.
- 32. An adhesion modifying coating for a tamper indicating transponder, said coating affecting the destruction of an electrically conducting material in said transponder, wherein said coating is applied after the application of said electrically conducting material.
- 35. A method of applying an adhesion modifying coating to a tamper indicating transponder used as a label component, so that said transponder will indicate whether an attempt has been made to tamper with said label, said method comprising applying said coating as a pattern of straight or curved lines, circles, dots, or other geometric shapes, said patterns optionally being interconnected.
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38. A method for modifying the destructibility properties of destructible tamper indicating tracks used in a tamper indicating transponder label, wherein said modification involves changing the formulation of an adhesive modifying coating material.
Specification