MUNICH, Germany (July 9)—The new owners of Mannesmann Plastics Machinery A.G., which includes rubber extruder maker Berstorff and polyurethane processing equipment maker Krauss-Maffei, plan to take the plastics machinery group public in few years. "Our preferred option would be an (initial public offering)," said Renate Krummer, a managing director of Apax Partners & Co. Ventures Ltd., which closed the deal July 6. Krummer would not rule out selling off part of the six-company group—or making an acquisition to bolster it. Apax and Mannesmann Plastics declined to discuss the transaction price, which was estimated at $675 million in published reports in European media. London-based Apax Partners beat out the other finalist, Investcorp. Apax will offer a group of Mannesmann Plastics executives a stake in the company, including Chairman Wolfgang Vogl, Krummer said. Vogl will continue to be the top executive of the machinery maker, she said.