masking

International Training ProgramModule A2

© PPG Industries© PPG Industries Issue 1- 04/00Issue 1- 04/00

MaskingMaskingMODULE NAMEMODULE NAME

A2A2MODULE NUMBERMODULE NUMBER

AutoREFINISH



MaskingMasking

• (Photo courtesy of 3M)



MaskingMasking• The purpose of masking is to protect trim, The purpose of masking is to protect trim,

glass, wheels or any other vehicle parts from glass, wheels or any other vehicle parts from overspray, dust or abrasionoverspray, dust or abrasion

• Masking is effective in protecting:Masking is effective in protecting:– Overspray of partsOverspray of parts– Dust settling on vehiclesDust settling on vehicles– Chrome, plastic mouldings during sandingChrome, plastic mouldings during sanding– Interior trimInterior trim– It can also be used for:It can also be used for:

– multi-toningmulti-toning– pinstripingpinstriping



Masking Tape - Water basedMasking Tape - Water based

Notes:Notes:• Do not leave masking tape on vehicles Do not leave masking tape on vehicles

for long periodsfor long periods• Do not store near solvents or dust as Do not store near solvents or dust as

this can cause contaminationthis can cause contamination• Keep tape off floors to prevent damage Keep tape off floors to prevent damage

to edgeto edge



Masking TapeMasking Tape• Variety of thicknesses and types from 9-

48mm• Fine 3-6mm tape for use when masking tight

curves• Crepe type used for:

• masking mouldingsmasking mouldings• attaching to paper forattaching to paper for

large area maskinglarge area masking• masking away bodymasking away body

parts or in seamsparts or in seams



Masking Tape - Types & Masking Tape - Types & usesuses

• Wide tape for masking mouldings,Wide tape for masking mouldings,headlights and small areas quicklyheadlights and small areas quickly

• Narrower tape attaches toNarrower tape attaches tomasking dispensermasking dispenser

• Variety of widthsVariety of widths• Used for pinstripe workUsed for pinstripe work• Easy to shape around curvesEasy to shape around curves• Very flexible, conforms to rivets etc.Very flexible, conforms to rivets etc.• Creates very sharp edgeCreates very sharp edge• Good for edges of trimworkGood for edges of trimwork



Masking PaperMasking Paper

• Used for masking Used for masking • WindowsWindows• TrimsTrims• Adjacent panelAdjacent panel

• Typical example of maskingTypical example of maskingwindscreen using maskingwindscreen using maskingtape and paper from dispensertape and paper from dispenser• Various sizes availableVarious sizes available(15,25,30,40 cm wide)(15,25,30,40 cm wide)



Space saving mobile dispenser(up to 3 rolls)

Mobile adjustable dispenser(up to 3 rolls)

Cutting blade

Second roll

Masking paper holder (adjustable)

Tape holder

Masking Paper DispensersMasking Paper DispensersUsed to:

• protect masking paper from dust and damage• enables easy dispensing of paper with tape

attached

Various types available



Special masking productsSpecial masking productsSpray on, liquid maskingSpray on, liquid masking

– Water basedWater based– Fast to applyFast to apply– Washes off with waterWashes off with water– Applied with conventional or airless spray Applied with conventional or airless spray

gungun– Reduces paper usageReduces paper usage



Special masking productsSpecial masking productsMasking filmMasking film

– Available on rolls or dispensersAvailable on rolls or dispensers– Cover large areas quicklyCover large areas quickly– Solvent and paint resistantSolvent and paint resistant



Special masking productsSpecial masking productsSponge tape (3M Dart)Sponge tape (3M Dart)

– Used to seal door, bonnet, boot apertures Used to seal door, bonnet, boot apertures against oversprayagainst overspray

– Eliminates need for masking paper on Eliminates need for masking paper on internal areasinternal areas

– Self adhesive, easy to useSelf adhesive, easy to use– Does not leave sharp paint edgesDoes not leave sharp paint edges



Correct Incorrect IncorrectDoor jamb

3/16" setback

Door

Special masking productsSpecial masking productsSponge tapeSponge tape

• Correct use of aperture sponge tapeCorrect use of aperture sponge tape



Reverse masking technique Reverse masking technique – Used to produce 'Soft' paint edge Used to produce 'Soft' paint edge

preventing paint build uppreventing paint build up

– Particularly for painting part panels up Particularly for painting part panels up to styling lineto styling line

– Useful for masking on seamsUseful for masking on seams



Reverse masking techniqueReverse masking technique(Panel edge)(Panel edge)

• Attach 50% of tape width to edge of seamAttach 50% of tape width to edge of seam

• Fold back tape gently to secureFold back tape gently to secure



Masking - points to Masking - points to remember remember

– Ensure vehicles are properly prepared Ensure vehicles are properly prepared and cleanand clean

– Always mask interior areas firstAlways mask interior areas first– Keep paper and masking tape flat to Keep paper and masking tape flat to

avoid overspray build upavoid overspray build up– Change paper and masking between Change paper and masking between

operationsoperations



MaskingMasking

• Mask to protectMask to protect• trim and glasstrim and glass• Mask airtight toMask airtight to• prevent dustprevent dust

masking

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