ORLANDO, FLA. - DuPont Co. announced the winners of its DuPont Plunkett Awards for Innovation with Teflon March 18 at a dinner held at the Disney World Yacht Club Resort in Orlando. Packard-Hughes Interconnect of Irvine, Calif., won in the electrical/electronic category and was named best overall entry for a fully additive method of fabricating electrical circuitry.
The circuits were chosen for their environmental, cost and interconnection advantages over conventional manufacturing processes for printed circuits.
The firm's Gold Dot technology electroplates copper to add conductors where needed.
The reusable templates where circuits form are coated withTeflon fluorinated ethylene propylene fluoropolymer resin. The process eliminates production steps in making circuits with integral raised contacts and produces less chemical waste than standard etching.
The flexible circuits are used for testing semiconductor wafers and for computers. The technology, once used primarily for defense systems, is gaining interest in automotive and other commercial sectors.
DuPont gave special recog-nition in the electrical/electronic category to Tensolite Co. of St. Augustine, Fla., for its Tufflite 2000 airframe wire.
W.L. Gore & Associates Inc. of Elkton, Md., won in the chemical category for its One-Up Pump Diaphragms for air-operated pumps, which uses flexible, single-piece composites of Teflon polytetrafluoroethylene fluoro-polymer resin and a reinforced elastomer.
DuPont gave special recognition for chemical processing to Furon Co.'s Bunnell Plastics Division of Anaheim, Calif., for its Ultrapure family of molded valves and regulators.
Gore also took the ``all other'' category for its Glide dental floss. The floss is made of expanded monofilament fibers of Teflon PTFE fluoropolymer resin.
For the ``all other'' category, special recognition was given to Pilot Industries Inc. of Dexter, Mich., for its P-Tec fuel and fuel vapor handling tube; and to Textiles Coated International of Amherst, N.H., for its LFP Structural Sheeting Material.
In Europe, first prize went to Koch Hightex GmbH of Rinsling, Germany, for Velaflex heavy fabrics of Teflon fiber for variable-geometry membrane construction.
IFK Isofluor of Neuss, Ger-many, received second prize for a fluorescent lamp tube covered with a shrink-fit jacket of Teflon FEP.
La Tecnochimica srl in Torino, Italy, won third prize for the Swam-Protector Duplex, a thin coating of Teflon on corks used in wine bottles.
Tokyo Gas Group of Tokyo and Nippon Pillar Packaging Co. Ltd. in Osaka, Japan, tied for first place among the Far East's winners. Tokyo Gas won for a steel plate laminated with Teflon PFA film for table-top and built-in gas ovens; Nippon won for its Super Type Pillarfitting with a safety-enhanced double seal structure.
Third place went to Nippon Valqua Industries Ltd., based in Tokyo, for a thin tube of Teflon PFA.