Download - Metallized Finishes
Metallized FinishesMetallized Finishes
PL ET 370PL ET 370Travis HunterTravis HunterJose PerezJose Perez
Josh SindlingerJosh Sindlinger
IntroductionIntroduction• Secondary ProcessesSecondary Processes• Cosmetic or Mechanical EnhancementCosmetic or Mechanical Enhancement• Excellent EFI & RFI ShieldingExcellent EFI & RFI Shielding• Three Basic ProcessesThree Basic Processes• Wide Range of Compatible MaterialsWide Range of Compatible Materials
Presentation OutlinePresentation Outline
• ApplicationsApplications
• ProcessesProcesses
• MaterialsMaterials
• EquipmentEquipment
ApplicationsApplications
• Cosmetic Enhancement – Faucet HandlesCosmetic Enhancement – Faucet Handles• Lighting – Reflector HousingsLighting – Reflector Housings• FilmsFilms
– Protect Light Sensitive FoodsProtect Light Sensitive Foods& Products& Products
• Corrosion ResistanceCorrosion Resistance
ApplicationsApplications• EMI/RFI Shielding - ElectronicsEMI/RFI Shielding - Electronics• Reflective Coatings - CDsReflective Coatings - CDs• Adding Electrical ConductivityAdding Electrical Conductivity
– Circuit BoardsCircuit Boards
ProcessesProcesses
• Vacuum MetallizingVacuum Metallizing
• PlatingPlating
• Spray/Aerosol PaintingSpray/Aerosol Painting
Vacuum MetallizingVacuum Metallizing• Vaporized Metal onto Plastic SubstrateVaporized Metal onto Plastic Substrate
• Thin CoatingsThin Coatings
• Consistent ThicknessConsistent Thickness
• Most Popular Method AvailableMost Popular Method Available
Vacuum MetallizingVacuum MetallizingPROCESS/EQUIPMENTPROCESS/EQUIPMENT
• Part is CleanedPart is Cleaned
• Surface PrepSurface Prep
• Part is PlatedPart is Plated
• Excess Metal is Spun OffExcess Metal is Spun Off
– (optional)(optional)
• Sealant (if necessary)Sealant (if necessary)
Vacuum MetallizingVacuum Metallizing ADV/DISASADVANTAGESADV/DISASADVANTAGES
• AdvantagesAdvantages– High Quality FinishHigh Quality Finish– Thin CoatingThin Coating– No Environmental ConcernsNo Environmental Concerns
• DisadvantagesDisadvantages– Poor Thermal ProtectionPoor Thermal Protection– Line of SightLine of Sight
PlatingPlating• Electrolytic (Chrome Plating)Electrolytic (Chrome Plating)
– Thick Metal Base CoatThick Metal Base Coat
– Cosmetic Top CoatCosmetic Top Coat
– Electrical Current Builds LayersElectrical Current Builds Layers
• ElectrolessElectroless– Chemical Deposition of MetalChemical Deposition of Metal
– Circuit Boards TracesCircuit Boards Traces
Electrolytic PlatingElectrolytic Plating PROCESS/EQUIPMENT PROCESS/EQUIPMENT
• PPart Ceaning/Prepart Ceaning/Prep
• Nickel PlatingNickel Plating
• Aqueous BathAqueous Bath
• Copper PlatingCopper Plating
• Nickel PlatingNickel Plating
• Chrome Plating Chrome Plating
(if necessary)(if necessary)
Electroless PlatingElectroless Plating PROCESS/EQUIPMENT PROCESS/EQUIPMENT
• Part Cleaned & EtchedPart Cleaned & Etched
• Catalyst Released onto Part SurfaceCatalyst Released onto Part Surface
• Electroless Copper PlatingElectroless Copper Plating
• Electroless Nickel PlatingElectroless Nickel Plating
• Sealant Sealant (if necessary)(if necessary)
PlatingPlatingADV/DISASADVANTAGESADV/DISASADVANTAGES
• AdvantagesAdvantages– High Quality finishHigh Quality finish– Covers Irregular SurfacesCovers Irregular Surfaces– Wear ResistantWear Resistant
• DisadvantagesDisadvantages– Caustic ChemicalsCaustic Chemicals– Very Slow ProcessVery Slow Process
Spray/Aerosol PaintingSpray/Aerosol Painting• Parts Coated with Conductive PaintParts Coated with Conductive Paint
• Little Specialty Equipment NeededLittle Specialty Equipment Needed
• Four MethodsFour Methods– Air AtomizationAir Atomization
– AirlessAirless
– Electrostatic Spray PaintingElectrostatic Spray Painting
– DippingDipping
Spray/Aerosol PaintingSpray/Aerosol Painting PROCESS/EQUIPMENT PROCESS/EQUIPMENT
• Part is Cleaned & Prepped (if necessary)Part is Cleaned & Prepped (if necessary)
• Surface is Coated with PaintSurface is Coated with Paint
• Coating Baked or Air DriedCoating Baked or Air Dried
• Well Ventilated Booth NecessaryWell Ventilated Booth Necessary
Spray/Aerosol PaintingSpray/Aerosol Painting ADV/DISASADVANTAGESADV/DISASADVANTAGES
• AdvantagesAdvantages– Good to Excellent FinishGood to Excellent Finish– Low CostLow Cost
• DisadvantagesDisadvantages– Poorer AdhesionPoorer Adhesion– Uneven ThicknessUneven Thickness– Environmental & Health ConcernsEnvironmental & Health Concerns– Waste/OversprayWaste/Overspray
Other ProcessesOther Processes
• Hot Film StampingHot Film Stamping
• Thermal Spray CoatingThermal Spray Coating
• Selective Electroless PlatingSelective Electroless Plating
• Direct MetallizationDirect Metallization
• Metallic Conformal CoatingMetallic Conformal Coating
• Physical Vapor DepositionPhysical Vapor Deposition
MaterialsMaterialsAmorphous ThermoplasticsAmorphous Thermoplastics
• Higher surface energyHigher surface energy
– ABS (Most Common)ABS (Most Common)
– HIPS, PMMA, and PC Also CommonHIPS, PMMA, and PC Also Common
MaterialsMaterialsSemi-Crystalline Thermoplastics Semi-Crystalline Thermoplastics
and Thermosetsand Thermosets• Low Surface Energy and Good Low Surface Energy and Good
Chemical ResistanceChemical Resistance– PolypropylenePolypropylene– AcetalAcetal– NylonNylon– Most Epoxies and PolyestersMost Epoxies and Polyesters
Processing/Design Processing/Design RequirementsRequirements
• Reduce Sharp CornersReduce Sharp Corners
• Low Residual StressesLow Residual Stresses
– Slow Fill TimesSlow Fill Times
– No Gating Onto Area to be MetallizedNo Gating Onto Area to be Metallized
• Avoid Weld LinesAvoid Weld Lines
• Avoid Release AgentsAvoid Release Agents
Additional RequirementsAdditional Requirements
• Surface Cleaning & PrepSurface Cleaning & Prep
• Need High Surface EnergyNeed High Surface Energy
• Sealant May Be UsedSealant May Be Used
• Processes Sensitive to Heat & MoistureProcesses Sensitive to Heat & Moisture