Donald Clark has been elected chairman of the American Fiber Manufacturers Association. He also serves as president and CEO of Pliana. Previously, Mr. Clark served as vice chairman and chairman of the executive committee for AFMA. He succeeds Walter Hubbard of Honeywell Nylon. Meanwhile, Lowell Bivens, president and general manager of Diolen Industrial Fibers was elected AFMA's vice chairman and Bradley Hill of Solutia was named treasurer.