What is conductive foil tape?
Conductive foil tapes refer to tapes made of metal foil backing. The most commonly used conductive foils are made of electrolytic grade, high tensile copper or aluminum. The metal backing contributes to the tape's electrical conductivity. Conductive foils are frequently employed for insulation in building construction and EMI shielding due to their reflective properties and electrical conductivity.
Copper with conductive adhesive
Copper foil tape with conductive adhesive has better conductive properties because its adhesive consists of two parts, a polymeric resin and a metal filler. The polymeric resin is a sticky paste that provides the physical property of adhesion. The metal fillers are particles of silver, gold, nickel, copper or graphite, in an appropriate amount to ensure electrical conductivity. Thus, copper with conductive adhesives has been used in electronic circuits repairing and EMI / RFI shielding.
Aluminum with conductive adhesive
Fun fact, aluminum is the fourth-best conductor behind only gold, copper, and silver, making it an excellent material for conductive foil tape. It is frequently used in shielding of electronic circuits from electromagnetic interference (EMI) and in grounding.