APPLIED EXTRUSION TECHNOLOGIES INC. - James Rich was named vice president of sales and marketing of the company's Packaging Films Division in Wilmington, Del. He had been with Mobil Chemical Co. for 23 years. BERSTORFF CORP. - Nelson Hopcus was named president and chief executive officer of the Charlotte, N.C., machinery manufacturer.
JOHN BROWN PLASTICS MACHINERY - Gary Armstrong was named president of the South Attleboro, Mass.-based company's Brown Machine Division in Beaverton, Mich. He replaces Richard Stewart, who resigned and took a position outside the plastics industry. The company's Epco Division in Fremont, Ohio, named Jerry Myers quality control manager and Bill Purcell service manager.
BUCKMAN LABORATORIES INC. - Charles Brandenburg was elected president and chief operating officer of the Memphis polymer and chemical manufacturer.
CIT GROUP/INDUSTRIAL FINANCING - Gary Adler was named district manager in the eastern business center. Robert Wulf was named district manager in the western business center. The Livingston, N.J., company is an operating unit of CIT Group.
CROWN CORK & SEAL CO. INC. -Craig Calle was named senior vice president-finance and treasurer of the Philadelphia packaging producer.
DAYTON TECHNOLOGIES - Paul Siudzinski was named senior project engineer for the Monroe, Ohio, manufacturer of vinyl lineals. He was with Great Lakes Window Inc. in Toledo, Ohio.
FOAMEX INTERNATIONAL INC. - Salvatore Bonanno was named executive vice president, manufacturing, for the Linwood, Pa., maker of flexible polyurethane foam.
GE PLASTICS - Piet van Abeelen was named vice president, Europe manufacturing, for GE Plastics in Bergen-op-Zoom, Netherlands.
KENPAK INC. - Cha Taosuwan was elected president of the City of Commerce, Calif., medical packaging manufacturer. He was senior executive vice president. Kenneth Wilkes, founder of the company, was elected chief executive officer.
KEY TRONIC CORP. - Computer and electronics executive Fred Wenninger was named president, chief executive officer and director of the Spokane, Wash.-based producer of computer keyboards. Wenninger formerly was an executive of Hewlett-Packard, president of Allied Signal's Bendix/King avionics subsidiary, and CEO of Iomega Corp. He is replacing Stanley Hiller as Key Tronic CEO. Hiller will become chairman, replacing Wendell Satre, who will remain on the board of directors as chairman emeritus.
MODERN ENGINEERING INC. - Aubrey Arndt was named chief financial officer and treasurer, replacing James Quire, who is retiring. Arndt was with Standard Products Co., where he was vice president and chief financial officer. Modern Engineering, headquartered in Warren, Mich., engineers and manufactures prototypes for the automotive, aircraft and related industries.
NIBCO INC. - Steven Price, vice president and general manager of the company's residential division and an officer of the company, resigned to join AlliedSignal Automotive in Southfield, Mich. James Drexinger, vice president of residential marketing, was named acting vice president and general manager of the division. The company, based in Elkhart, Ind., manufactures plumbing components, valves and fittings.
OHIO MANUFACTURERS' ASSOCIATION - Wendell Fryer was named chairman of the board of the Columbus, Ohio-based trade group. Fryer is president and chief executive officer of Centrex Corp., a Findlay, Ohio-based injection molder of automotive products.
OWENS-CORNING FIBERGLAS CORP. - Scott Koepke was named president, global pipe operations, for the Toledo, Ohio, company. He succeeds Patrick Moore, who is working on special assignments for the chairman, according to the company. Koepke was president, Latin America operations; those responsibilities will be assumed by Charles Dana, executive vice president.
PARAMOUNT PACKAGING CORP. - Robert Malone was named central Tennessee operations manager for the Chalfont, Pa., manufacturer of flexible packaging.
PHOENIX PRODUCTS CO. INC. - Ronald Tabat was named vice president-sales and marketing for the health division of the Milwaukee manufacturer of sterile, disposable medical packaging.
PLASPROS INC. - David Georgi was named president of the Woodstock, Ill., injection molder.
RESOURCE PLASTICS INC. - Douglas Matthews was named chief executive officer of the Brantford, Ontario, recycler of polyethylene film and rigid containers. He replaces Barry Wood, who has left the company.