metallized finishes
DESCRIPTION
Metallized Finishes. PL ET 370 Travis Hunter Jose Perez Josh Sindlinger. Introduction. Secondary Processes Cosmetic or Mechanical Enhancement Excellent EFI & RFI Shielding Three Basic Processes Wide Range of Compatible Materials. Presentation Outline. Applications Processes Materials - PowerPoint PPT PresentationTRANSCRIPT
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