The invention relates to rubber mixtures which contain microgels and isocyanatosilanes and vulcanisates produced therefrom. One embodiment of the invention includes inner and outer main bodies to receive a two-piece cleat. The mounting part has an elongate portion that is engagable with the transponder part so as to be received in the transponder part when the tag is in the mounted position. The process may include guiding the fiber material web through a press nip of an upstream one of the at least two double-felted presses formed by a deflection-controlled shoe press roll and a suction roll. The chip resistor further includes dummy electrodes formed individually at the opposing side portions of the rectangular substrate at positions corresponding to the upper surface electrode pair in the direction connecting the side portions.