RFID composite for mounting on or adjacent metal objects
First Claim
1. A composite comprising:
- a first layer containing an RFID or EAS device; and
a foamable material layer held in proximity with said first layer, said foamable material layer expanding in size and reducing in density when subjected to foaming-initiating activation, wherein the composite is configured to expand in width when said foamable material is subjected to foaming-initiating activation.
2 Assignments
0 Petitions
Accused Products
Abstract
A composite containing an RFID can be mounted on, in, or adjacent a metal object without de-tuning of the antenna of the RFID. The composite includes a first RFID or a EAS device-containing layer, and a foamable material layer held in proximity with the first layer. The foamable material layer expands in size and reduces in density when subjected to external stimuli, such as heat or microwaves. The foamable layer may comprise an intumescent material, and may have RF radiation-absorbing material filler. Pressure sensitive adhesive, when the composite is in a label form, may be used to mount the composite on or adjacent a metal object after printing of the printable surface of the composite, and the foamable material layer is subjected to the external stimuli after printing and either before or after mounting on or adjacent the metal object.
110 Citations
20 Claims
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1. A composite comprising:
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a first layer containing an RFID or EAS device; and
a foamable material layer held in proximity with said first layer, said foamable material layer expanding in size and reducing in density when subjected to foaming-initiating activation, wherein the composite is configured to expand in width when said foamable material is subjected to foaming-initiating activation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of utilizing an RFID, comprising:
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(a) making a composite material having an RFID and at least one foamable material layer activatable by external stimuli;
(b) placing the composite in operative association with a metal object; and
(c) applying external stimuli to effect foaming of the foamable material to space the RFID from the metal object. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification