AMPACET CORP. - The compounder in Tarrytown, N.Y., named Paul Greisinger north central regional manager.
CIBA SPECIALTY CHEMICALS CORP. - The additives maker in Basel, Switzerland, named Al Johnson Americas technical manager for its metallic colors printing subsidiary, MetalFX Technology in Leeds, England.
DAVIS-STANDARD LLC - Fabian Umbach, global business manager for liquid coatings, also will lead the liquid coatings business for the machinery maker's converting systems division in Fulton, N.Y. Davis-Standard is based in Pawcatuck, Conn.
ERIE PLASTICS CORP. - Ronald Walters retired as president and general manager after 43 years with the Corry, Pa.-based injection molder. He will continue in a consulting capacity.
EUROPEAN DIISOCYANATE & POLYOL PRODUCERS ASSOCIATION (ISOPA) - The trade group in Brussels, Belgium, named Wolfram Frank secretary general, effective April 1, succeeding Mike Jeffs, who is retiring.
EXOPACK LLC - The film maker in Spartanburg, S.C., named Tom Vale chief operating officer.
GENFLEX ROOFING SYSTEMS LLC - The Indianapolis roofing manufacturer named Jim Burkett product development manager.
MIKRON INDUSTRIES INC. - The window profile extruder in Kent, Wash., named Mark Milburn vice president of finance and Bonnie Butler vice president of human resources.
NORPLEX-MICARTA - The manufacturer of high-performance thermoset composites in Postville, Iowa, named Timothy Delaney product development engineer.
POLYVANCED GMBH - The tubing manufacturer in Osnabruck, Germany, named Matthias Strehl sales director.
PROGRESSIVE COMPONENTS INTERNATIONAL CORP. - Wayne Hertlein, an applications engineer for the Wauconda, Ill.-based supplier of tooling components, has accepted the chairmanship of Plastic Tooling & Mold Design Tech Group. The tech group is sponsored by the Society of Manufacturing Engineers, which is headquartered in Dearborn, Mich.
TREX CO. INC. - The maker of composite decking and railing in Winchester, Va., named James Cline vice president and chief financial officer, and Timothy Reese vice president of operations.