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SME FC910386
- Automated Application Of Silicone Glass Like Coatings For Polycarbonate Headlamps Lenses
- standard by Society of Manufacturing Engineers, 06/01/1991
- Publisher: SME
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SILICONE HARDCOATING AND PLASTIC HEADLAMP LENSES WERE FIRST DEVELOPED IN THE LATE 1970S DUE TO THE GROWING TREND IN AUTOMOBILE DESIGN TOWARDS WEIGHT REDUCTION AS WELL AS A DESIRE FOR DESIGN FLEXIBILITY. GENERAL ELECTRIC'S LEXAN POLYCARBONATE COATED WITH GENERAL ELECTRIC'S ADVANCED PRIMER AND SILICONE HARDCOAT COMBINATION QUALIFIED AS A PERFECT REPLACEMENT FOR GLASS AUTOMOTIVE HEADLIGHTS. VACUMET INCORPORATED IN CONJUNCTION WITH GE FIRST DEVELOPED THE PROCESS ENGINEERING SPECIFICATIONS FOR HARDCOAT APPLICATIONS ON FORD AERODYNAMIC HEADLAMP LENSES. INITIALLY THE LENSES WERE HAND-SPRAYED. AS VOLUME INCREASED, AND AUTOMATED HARDCOATING OF AERODYNAMIC LENSES USING THE W.S. ROCKWELL SPRAY SYSTEM WAS IMPLEMENTED.