An RF heating system for bonding a first element to a second element. In one embodiment, the RF heating system includes: (a) a composition, which functions as an adhesive, interposed between the first and second elements, the composition including an ionomer and a polar carrier, wherein the ionomer and/or the carrier are present in amounts effective to allow the composition to be headed by a fringe RF field; and (b) a radio frequency (RF) heating apparatus for producing the fringe RF field.