RFID tag and methods of use and manufacture
First Claim
1. An RFID tag comprising:
- a first substrate carrier comprising a flexible waterproof material and configured to include a substrate carrier foil comprising at least a first antenna printed on the substrate carrier foil from a conductive ink liquid solution;
at least first and second resonance amplifiers printed on the substrate carrier foil and connected to the at least first antenna;
a UHF RFID circuit integrated into the substrate carrier foil at the first antenna; and
a second substrate carrier comprising a flexible waterproof material configured to cover the first substrate carrier and the UHF RFID circuit, wherein the substrate carrier foil comprises kapton and the first antenna has a length of 5 to 255 mm, a width of 0.005 to 5 mm, and a thickness of 0.05 to 9 nm,wherein the conductive ink solution comprises 65-75% DuPont e782 Silver ink, 15-25% graphite, and 5-15% neodymium.
1 Assignment
0 Petitions
Accused Products
Abstract
Thin RFID (Radio Frequency Identification) tags that are waterproof, made of materials able to withstand high pressure, hot and cold temperatures, and durable enough for a wide variety of applications, including being attached, affixed to, woven in, or otherwise enclosed within clothing, towels, linen, or other laundry, or affixed to other products, including consumer products, food products, and other goods and inventory. The tags have up to two antennas printed from a conductive ink solution comprising DuPont e782 Silver ink, graphite, and neodymium on a substrate foil made of materials including ST505 PET polymide, polyester, kapton, or a combination of ST505 PET polymide and kapton, Information stored on such RFID tags can be read using a variety UHF readers or a smartphones using RFID or Bluetooth or other forms of wireless communication.
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Citations
29 Claims
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1. An RFID tag comprising:
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a first substrate carrier comprising a flexible waterproof material and configured to include a substrate carrier foil comprising at least a first antenna printed on the substrate carrier foil from a conductive ink liquid solution; at least first and second resonance amplifiers printed on the substrate carrier foil and connected to the at least first antenna; a UHF RFID circuit integrated into the substrate carrier foil at the first antenna; and a second substrate carrier comprising a flexible waterproof material configured to cover the first substrate carrier and the UHF RFID circuit, wherein the substrate carrier foil comprises kapton and the first antenna has a length of 5 to 255 mm, a width of 0.005 to 5 mm, and a thickness of 0.05 to 9 nm, wherein the conductive ink solution comprises 65-75% DuPont e782 Silver ink, 15-25% graphite, and 5-15% neodymium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of manufacturing an RFID tag comprising:
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loading rolled foil in a feeding unit; unrolling the foil to a printer unit comprising a squeegee and press screen having holes; passing the unrolled foil underneath the press screen; moving the squeegee of the printing unit back and forth over the press screen to dispense a preset amount of conductive ink solution at a preset pressure on the foil through the press screen to create at least one antenna on the foil of 5-255 mm in length, 0.05-5 mm in width, and a thickness of 0.05-0.9 nm; passing the unrolled foil to a drying unit; subjecting the unrolled foil to heat in at least two heating units to dry the at least two needle shaped antennas on the foil; loading the unrolled foil in a bonding unit; dispensing epoxy resin from the bonding to the unrolled foil; mounting an ultra-high frequency (UHF) RFID integrated circuit to the unrolled foil with the epoxy resin at at least two points of the at least one antenna; mounting at least two resonance amplifiers to the unrolled foil at at least two points of the antenna; placing the foil in a first, flexible, waterproof substrate carrier and covering and sealing the first substrate carrier with second flexible, waterproof substrate carrier configured to cover the first substrate carrier and the UHF RFID circuit, wherein the conductive ink solution comprises 65-75% DuPont e782 Silver ink, 15-25% graphite, and 5-15% neodymium. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification