Description/Application
New proprietary technology permits coating of fine wire with a thin, smooth, pinhole-free finish of Teflon^® PTFE fluoropolymer resin to provide release or slip properties and/or electrical insulation.  Applications include providing an internal forming mandrel for extrusion of small-diameter plastic tubing with extremely accurate bore and use as magnet wire in electrical coils.

Release coating thickness is typically 0.0002+0.0001 in. (5.1 µm+2.5 µm).  For electrical insulation, coating thickness is typically 0.0001 in. (25.4 µm).  The manufacturer has coated silver-plated copper wire with diameters from 0.012 to 0.080 in. (0.3 to 2.0 mm) and on stainless steel wire from 0.0001 to 0.040 in. (25 µm to 1 mm) in diameter.

Manufacturer
Applied Plastics Co., Inc., Norwood, MA
Phone:  (781) 762-1881. Fax:  (781) 769-3349

Benefits Gained
Slip/release boosts output.  Release-coated wire increases output rates of extruded small-diameter tubing and formed rubber bladders, and can provide similar benefits in other manufacturing processes, according to Applied Plastics.

Flights contamination.  The coated wire protects the purity of hot polymers or other materials that come in contact with it, thanks to the purity, chemical compatibility, heat resistance and strong adhesion to metal of Teflon^® PTFE finishes.

Durable insulation.  Magnet wire coated with Teflon provides excellent electrical properties and excellent resistance to cleaning solvents and high temperatures.

Material Selected and Why
Teflon^® PTFE primer and finish provide strong adhesion to metal, excellent release and insulation performance, heat resistance and uniform consistency for application as thin, smooth, coatings.

Teflon® is a registered trademark of DuPont used under license by Applied Plastics Company, Inc.