Bonding RFIDs

RFIDs (radio frequency identifications) are modern radio-frequency data transmission systems used for tracking tags. This new technology can replace the still commonly used barcode.

RFIDs consist of small chips that are bonded to an antenna. These antennas are often printed onto flexible substrates, which means that the adhesives used must also be elastic. In high-volume production, rapid curing of UV- or heat-curing adhesives is important.

RFIDs are often contacted with anisotropic conductive adhesives. Anisotropic conductive adhesives (ACA) contain special conductive particles in the µm range, which conduct electricity only in one direction. These special-purpose adhesives are exceptionally easy to use, as only a single drop must be applied. The chip is pressed into the adhesive and the special filler particles establish the anisotropic contact, i.e. only in the Z-axis.

Adhesives are used for antennae printing and connecting RFID chips