Radio frequency identification tags and labels

A method of producing a radio frequency identification element using a substantially dielectric base substrate having first and second opposite faces and a radio frequency identification chip having contacts, comprising:

• (a) printing a radio frequency identification antenna with conductive ink or toner on the substrate first face;
• (b) bringing the radio frequency identification chip into operative contact with the radio frequency identification antenna by pushing the radio frequency identification chip into operative contact with the base substrate second face, and by pressing the chip contacts through the base substrate from the second face thereof, into contact with the radio frequency identification antenna, and securing the radio frequency identification chip in place;
• and
• (c) providing at least one protective substrate or coating on at least one of the radio frequency identification chip and antenna.

A radio frequency identification element comprising:

• a substantially dielectric base substrate having first and second opposite faces;
• a radio frequency identification antenna of conductive material disposed on said first face of said base substrate;
• a radio frequency identification chip having contacts, said chip in operative association with said base substrate second face and said chip contacts penetrating said base substrate so that said contacts are in electrical contact with said antenna, and said base substrate substantially serves as a dielectric;
• and
• at least one protective coating or substrate provided on at least one of said antenna and chip.

A method of producing a radio frequency identification element from using a substantially dielectric base substrate having first and second opposite faces and a radio frequency identification chip having contacts, comprising:

• (a) printing a radio frequency identification antenna with conductive ink or toner on the substrate first face;
• (b) bringing the radio frequency identification chip contacts into operative contact with the radio frequency identification antenna;
• and
• (c) providing at least one protective substrate or coating on at least one of the radio frequency identification chip and antenna by applying a coating of heat expandable microspheres to at least one of the chip and antenna, and heating the microspheres to expand them and flexible protective a flexible protective coating.

A method of producing a radio frequency identification element from using a substantially dielectric base substrate having first and second opposite faces and a radio frequency identification chip having contacts, comprising:

• (a) printing a radio frequency identification antenna on the substrate first face using a printing media comprising a carrier including resin and wax which becomes fluid upon heating, and containing conductive materials therein, by heating the carrier so that it becomes fluid and is applied as a thick film on the substrate first face, and by allowing the carrier to cool so as to provide a conductive antenna;
• (b) after cooling of the carrier, bringing the radio frequency identification chip contacts into operative contact with the radio frequency identification antenna;
• and
• (c) providing at least one protective substrate or coating on at least one of the radio frequency identification chip and antenna.