Fluoro热塑料导线挤压涂层

Click to edit Master title style,A 3M Company,Fluoro-thermo-plasticWire Extrusion coating,Per Nelson,Erik Peters,Dyneon LLC,Topics,Polymers,Conductor Payoff,Sizing/cleaning,Preheating,Extruder,Crosshead,Tooling,Cooling,Gauges,Troubleshooting,Dyneon FEP, PFA, ETFE, THV,Polymer uses,Polymer line speeds,Payoff,Options,Flier,Roll-off,Inline draw,Flow stability is crucial,back tension after flier,tension brake,Sizing/cleaning (solid conductors),Introduces tension to line,Cleans copper surface,Improved copper surface; improved electrical transmission,Copper Preheating,Indicators,High preheat,Voided inner surface,Smooth outer surface,Better adhesion strip,Low preheat,Rough outer surface,Poorer adhesion,Recommendations,Temperature guidelines,FEP/PFA100-180 C,ETFE/THV 50 C,Depends on linespeed,Measurement,Paper,good comparative test,universal,Extruder,Extruder specs,L,/D 24-34:1,Saxton mixing 2-4 x diameter,Close heat control necessary for a stable process,corrosion protected material nickel alloy,Extruder needs to have at least 400 C maximum temperature,Crosshead,Specs,Fixed or adjustable center,Corrosion protected material construction,Coex/single extrusion possible,Tubing,Why tube extrusion?,Melt fracture,Smooth surface,Shark skin,Extruded film,Tubing,Tooling,Tooling calculations,DDR= (D,D,-D,T,)/(d,CC,-d,W,),DRB= (D,D,/d,CC,)/(D,T,/d,W,),Cone,Indicators,Too long,Diameter variation,Unstable,Too short,surface roughness,sparks/pinholes,cone breaks,Unstable,Tip and die not concentric,Core not centered,Melt too hot or cold,Line speed too high,Recommendations,30-40 mm,Cooling Trough,Capstan,Cold water spray typical,Grooved sheaves preferable over stationary guides,Gauges/Indications,Line tension,gauge of instability,Identify conductor damage,Inner (copper) diameter,copper size and quality,Capacitance,crucial for foam,adhesion problems,eccentricity problems,diameter problems,Gauges/Indications,Outer diameter,Product size,Long-term variation,ovality,Eccentricity,Copper center,Lump/neckdown,Short term variation,Spark tester,holes, thin spots,Troubleshooting,Troubleshooting,Troubleshooting,Troubleshooting,Troubleshooting,Many Thanks:,Erik Peters,Dyneon, Gendorf,Kerkrade,