A method surface functionalizes and produces a surface fastener part (12) forming a surface faster (10) that can be opened and closed repeatedly with a mating surface fastener part (14). The surface fastener parts (12, 14) include protruding hook parts (18) disposed at least partially on a carrier part (16), each having a head part (20) on its side facing away from the carrier part (16) and forming a fastening element (22). At least one part of the hook parts (18) of a locking part (12, 14) is provided with a functional medium. The associated head parts (20) are kept largely or completely away from the medium. The fastening forces for engaging the corresponding fastening elements (22) and forming the closed surface fastener (10) are then reduced. The holding forces are then increased up to separating the corresponding fastening elements (22) and forming the opened surface fastener (10).
