ADVANCED ENVIRONMENTAL RECYCLING TECHNOLOGIES INC. - Robert Gorsche was named chief operating office of the company, headquartered in Springdale, Ark.
ALLTRISTA CORP. - Named Timothy Sigley president of its Plastic Packaging Co. in Muncie, Ind. He replaces Robert Armen, who left to devote his full time to personal and family businesses.
AUTOMOTIVE INDUSTRIES INC. - William Maclean was named vice president of business development for the Rochester Hills, Mich., manufacturer of automotive interior trim and under-the-hood systems and parts.
CADILLAC PLASTIC AND CHEMICAL CO. - John Nichols retired as president and chief executive officer of the Troy, Mich., distributor of sheet, rod, tube and film. He had been with the company 34 years. Kent Darragh, who was vice president of operations, was named president.
FPI THERMOPLASTIC TECHNOLOGIES - Clare Blackmore was named quality assurance manager for the Morristown, N.J., injection molder and extruder. Daryl Little was named manager, engineering and development, for the extrusion division.
H&H ENGINEERED MOLDED PRODUCTS INC. - John Harrison was named vice president and general manager of the Solon, Ohio, custom injection molder.
NAPCOR - Terry Begley, director of plastics resource management at Eastman Chemical Co., was named chairman of the National Association for Plastic Container Recovery in Charlotte, N.C.
SEQUENTIA INC. - Sidney Warner II was named vice president, plant operations, for the company's Grand Junction, Tenn., production facilities. The Strongsville, Ohio, company makes fiberglass-reinforced construction panels.
STOESSER INDUSTRIES - Mark DiGiampietro was named general manager and Michael Goffstein was named sales director of the Mountain View, Calif., injection molder's plastic molding division.
Houston-based market research firm MARKET RESOURCES INC. named Clifford Lee, a metallocene expert, as its project director. ... STERLING INC. of Milwaukee named Jerry Neidigh vice president of sales and marketing for its Sterltech robotics division, and Harold Monde systems engineering manager for Sterlcool, the company's process cooling/chilling division. ... ALLIEDSIGNAL INC. of Morristown, N.J., named Richard Wallman senior vice president and chief financial officer, effective March 16. Wallman was vice president and controller at IBM. ... HERBOLD GRANULATORS U.S.A. INC. of Sutton, Mass., named Arthur Schloth regional sales manager for the Southeast and mid-Atlantic.