Identifying and eliminating paint defects. - Standox

1 Identifying and eliminating paint GmbH Postfach D-42271 Wuppertal Germany44070578 GB 1005 2000 THK_Paint 13:02 Uhr Seite 2 THK_Paint 10:08 Uhr Seite 11 CMYCMMYCYCMYK13 Water spotting Vehicles washed with water from hard water supply Visible on dark colors, particulary onvehicles washed in direct sunlightCause Never wash vehicles with householddetergent Rinse vehicle with chemically softenedwater Dry vehicle directly after washingPrevention Wash vehicle with wax containingshampoo Dry with damp leather cloth Severe stains may need polishingto removeRemedy THK_Paint 10:08 Uhr Seite 1 CMYCMMYCYCMYKP aint defects inevitable but defects can have many causes.

2 Maybe your customer had an accident,or maybe the car was exposed to aggressive atmospheric conditions. It is also possible,that mistakes were made during the coating process maybe the coat thickness wasnot right or drying times were too short. Sometimes such damage is due to badlyprepared substrates. And last but not least, the conditions prevailing in the workshopalso play an important fact, it is not always easy to realise the cause at first sight. To repair a paint defecteffectively, however, a thorough analysis is indispensable. This brochure is designedto assist you in the reliable assessment of paint defects .

3 The different paint defects andtheir causes are illustrated along with tips and recommendations for their professionalremoval. To make the identification of flaws and defects easier, this brochure consistsof two parts. The first relates to the potential sources of defects during the preparationand finishing processes, while the second takes a look at the impact our environmentmay have on the quality and looks of a car s will thus be able to clearly identify the cause of a defect and eliminate it quickly before your customer complains. This will not only save you a lot of trouble,time and money but also enhance your reputation as a professional refinisher deliveringhigh quality THK_Paint 10.

4 08 Uhr Seite 2 CMYCMMYCYCMYK> Adhesion problems between base and clear coats> Clouding> Dirt and dust in basecoat> Dirt and dust in clearcoat> Edge mapping> Lifting & wrinkling> Matting/gloss> Moisture blisters> Orange peel> Pinholes in polyester> Polyester bleeding> Poor adhesion polyester stopper> Poor adhesion on plastic parts> Poor opacity> Runs> Salt & pepper effect> Sanding scratches> Silver halo effect> Solvent popping> Water spottingPaint defects in alphabetical order> Acid rain> Bird droppings> Car wash abrasions> Color fade / change> Corrosion> Industrial fall out/rail dust> Insect secretion> Lime or cement dust> Stone chip metallic> Stone chip solid> Tar spots> Tree resin / sap> Water spottingPaint defects in alphabetical orderContents# 2# 1# 11# 12# 10# 8# 6# 9# 4# 3# 7# 5# 13# 12# 3# 10# 11# 7# 16# 18# 14# 6# 17# 8# 15# 19# 13# 1# 5# 9# 20# 4# 2 EnvironmentalRefinish THK_Paint 10.

5 08 Uhr Seite 2 CMYCMMYCYCMYK> Adhesion problems between base and clear coats> Clouding> Dirt and dust in basecoat> Dirt and dust in clearcoat> Edge mapping> Lifting & wrinkling> Matting/gloss> Moisture blisters> Orange peel> Pinholes in polyester> Polyester bleeding> Poor adhesion polyester stopper> Poor adhesion on plastic parts> Poor opacity> Runs> Salt & pepper effect> Sanding scratches> Silver halo effect> Solvent popping> Water spottingPaint defects in alphabetical order> Acid rain> Bird droppings> Car wash abrasions> Color fade / change> Corrosion> Industrial fall out/rail dust> Insect secretion> Lime or cement dust> Stone chip metallic> Stone chip solid> Tar spots> Tree resin / sap> Water spottingPaint defects in alphabetical orderContents# 2# 1# 11# 12# 10# 8# 6# 9# 4# 3# 7# 5# 13# 12# 3# 10# 11# 7# 16# 18# 14# 6# 17# 8# 15# 19# 13# 1# 5# 9# 20# 4# 2 EnvironmentalRefinish THK_Paint 10.

6 08 Uhr Seite 3 CMYCMMYCYCMYK4321 Insufficient drying of primer filler incorners, edges, rebates and belowdecorative strips Solvent or air trapped in film, whichthen escapes leaving pop marks dueto incorrect spraying viscosity, sprayingpressure, flash-off times and dryingtimes Incorrect choice of hardeners and thinners Film build too high Wrong spraying techniqueCause Apply normal film thicknesses Check oven temperature regularly Follow recommendations on technicaldata sheetsPrevention After drying, repaint without sanding(within 24 hrs)

7 Or sand with Scotch briteultrafine After drying and sanding, fill pinnholeswith Polyester Spray Filler or removedamaged finish and repaint Sand, prime and repaintRemedySolvent popping Incorrect spraying viscosity,spraying technique, flash-off times,spraybooth temperature Defective spray gun set up,incorrect spraying pressure Unsuitable thinnersCause Adjust material correctly Keep spray gun parallel to object Choose suitable spray gun set up Use manufacturer s thinners Ensure sufficient flash-off Follow application recommendationsin technical data sheetsPrevention When using conventional basecoat:use droplet method before sprayingclear After clear has through-dried,sand surface and repaint When using waterborne basecoat.

8 Apply uniform finish on wet basecoatin accordance with technical datasheetRemedyClouding Topcoat not sufficiently cured Excessive film thickness, drying timetoo short Use of unsuitable thinner Incorrect hardener mixing ratio Wrong hardener usedCause Follow application recommendationson technical data sheetsPrevention After through-drying, removemarks by polishing Thoroughly dry topcoat, sandand repaintRemedyWater spotting Incorrect spraying viscosity, sprayingtechnique, flash-off times betweencoats, and film thicknesses Defective spray gun set up Incorrect spraying pressure Temperature of paint , substrate orspraybooth too low Incorrect choice of hardeners andthinnersCause Follow application recommendationson technical data sheets Ensure that the spray gun is in goodworking order Warm object and material up toroom temperature of 20 C/68 F Use correct combination of hardenersand thinnersPrevention Sand and polish Sand and repaintRemedyRuns THK_Paint 10.

9 08 Uhr Seite 3 CMYCMMYCYCMYK4321 Insufficient drying of primer filler incorners, edges, rebates and belowdecorative strips Solvent or air trapped in film, whichthen escapes leaving pop marks dueto incorrect spraying viscosity, sprayingpressure, flash-off times and dryingtimes Incorrect choice of hardeners and thinners Film build too high Wrong spraying techniqueCause Apply normal film thicknesses Check oven temperature regularly Follow recommendations on technicaldata sheetsPrevention After drying, repaint without sanding(within 24 hrs)

10 Or sand with Scotch briteultrafine After drying and sanding, fill pinnholeswith Polyester Spray Filler or removedamaged finish and repaint Sand, prime and repaintRemedySolvent popping Incorrect spraying viscosity,spraying technique, flash-off times,spraybooth temperature Defective spray gun set up,incorrect spraying pressure Unsuitable thinnersCause Adjust material correctly Keep spray gun parallel to object Choose suitable spray gun set up Use manufacturer s thinners Ensure sufficient flash-off Follow application recommendationsin technical data sheetsPrevention When using conventional basecoat:use droplet method before sprayingclear After clear has through-dried,sand surface and repaint When using waterborne basecoat.