This invention relates to an apparatus for embossing hot molded plastic foil which comprises one or more banks of multiple embossing elements mounted on a rotatable wheel operated in cooperation with a hot-molding machine supporting multiple mold cavities. The embossing surface of each element has a curvilinear lateral profile and rotates around the wheel axis in a direction opposite to the rotation of the drum of the hot-molding machine in a manner synchronized to the rotation of the drum so that each embossing surface meshes with a corresponding mold, pressure embossing the hot plastic form molded therein. The peripheral speeds of the mating surfaces of embossing element and mold, as well as the embossing pressure, are controlled by interlocking the respective drive mechanisms, plus suitable elastic means, so that no slippage can occur in the mold cavity upon contact between the surfaces at high rotational speeds.