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How can I avoid adhesion problems when painting?

Peter Kwasny, aerosol, Aerosol, Paint preparation, spray paint, paint, paints, laquer, Auto-K, auto-k, Spray-Set, spray-set, Multona, multona, belton, Original colour tone, original colour tone, SprayMax, Spraymax, spraymax, Autok, Autocolor, Auto Color, Peter Kwasny GmbH, touch-up pencil, Touch-Up Pencil, Mini Mixingsystem, PaintRepair, PaintRepair, car repair paint, car paint, car repair, manufactoring company, manufacturing, industrial paint, do-it-yourself, DIY, decorative paints, coat of paint
  • To avoid adhesion problems, the area that is to be painted should be generally dry,  clean and free of grease.
  • In the case of problematic surfaces, such as e.g. plastics and polystyrene, an appropriate primer should always be used.

 

 

How can I avoid drips forming?

Peter Kwasny, aerosol, Aerosol, Paint preparation, spray paint, paint, paints, laquer, Auto-K, auto-k, Spray-Set, spray-set, Multona, multona, belton, Original colour tone, original colour tone, SprayMax, Spraymax, spraymax, Autok, Autocolor, Auto Color, Peter Kwasny GmbH, touch-up pencil, Touch-Up Pencil, Mini Mixingsystem, PaintRepair, PaintRepair, car repair paint, car paint, car repair, manufactoring company, manufacturing, industrial paint, do-it-yourself, DIY, decorative paints, coat of paint

Drips in the paintwork can arise for a number of reasons:

  • To avoid them, you should always ensure that your spray distance to the object is never too low. It should always be at least 15 - 25 cm.
  • Also, the paint should not be applied too thickly in one go. Spray on several thin layers in cross-coats. This involves applying a horizontal coat first and then a vertical coat. The turning point should be external to the object  
  • Also, care should be taken to ensure that all work materials, such as the spray paint can, the object that is to be painted and the room temperature are all at the ideal processing temperature which lies between 20 and 25°C.

How can I get rid of the paint that becomes “white and cloudy”?

Peter Kwasny, aerosol, Aerosol, Paint preparation, spray paint, paint, paints, laquer, Auto-K, auto-k, Spray-Set, spray-set, Multona, multona, belton, Original colour tone, original colour tone, SprayMax, Spraymax, spraymax, Autok, Autocolor, Auto Color, Peter Kwasny GmbH, touch-up pencil, Touch-Up Pencil, Mini Mixingsystem, PaintRepair, PaintRepair, car repair paint, car paint, car repair, manufactoring company, manufacturing, industrial paint, do-it-yourself, DIY, decorative paints, coat of paint
  • The white cloudiness on the paint is created when the paint is applied at a humidity level that is too high. The grey coat can be polished off after the paint has completely dried.
  • The optimum processing temperature lies between 20 and 25°C at a low level of humidity.

 

 

The coat of paint is flaky and cracked

Peter Kwasny, aerosol, Aerosol, Paint preparation, spray paint, paint, paints, laquer, Auto-K, auto-k, Spray-Set, spray-set, Multona, multona, belton, Original colour tone, original colour tone, SprayMax, Spraymax, spraymax, Autok, Autocolor, Auto Color, Peter Kwasny GmbH, touch-up pencil, Touch-Up Pencil, Mini Mixingsystem, PaintRepair, PaintRepair, car repair paint, car paint, car repair, manufactoring company, manufacturing, industrial paint, do-it-yourself, DIY, decorative paints, coat of paint
  • If no primer is used when painting plastics, the paint will flake the first time it is put under pressure. The paint will not adhere to most plastics which is why a plastic primer should be used.
  • Also, cracks can appear in the paint if for example a highly pigmented paint, e.g. a  primer, is applied to a less pigmented paint, e.g. a top coat.
  • The paint structure should there fore comply with the following pattern: Primer - base paint - clear lacquer
  • Also, cracks may appear in the paintwork if a number of different paint types has been used. One product line from the same manufacturer should always be used for the whole paint structure to avoid any incompatibility problems.

 

 

 

Why is my paintwork rough and does not shine?

Peter Kwasny, aerosol, Aerosol, Paint preparation, spray paint, paint, paints, laquer, Auto-K, auto-k, Spray-Set, spray-set, Multona, multona, belton, Original colour tone, original colour tone, SprayMax, Spraymax, spraymax, Autok, Autocolor, Auto Color, Peter Kwasny GmbH, touch-up pencil, Touch-Up Pencil, Mini Mixingsystem, PaintRepair, PaintRepair, car repair paint, car paint, car repair, manufactoring company, manufacturing, industrial paint, do-it-yourself, DIY, decorative paints, coat of paint
  • Due to the fact that the spray distance is too great, the paint does not run on the surface any more. It already dries in the air and lands as  “spray mist“ on the surface. This can be avoided when the painting distance of 15 - 25 cm is maintained constantly.
  • A further reason for this may be that the paint is applied to an object that is too hot or the paint is applied in bright sunshine. If the heat is too great, the solvent on the surface can no longer be released and “bubbles” are created which then prevent the surface from shining. This can be avoided by only painting in a place protected from the sun with the ideal processing temperature of approx. 20 to 25°C, at low humidity.  
  • Also the paint shine can be impaired by dust in the air – always apply the paint in a protected place.

There are creases on my paintwork / the paintwork swells

Peter Kwasny, aerosol, Aerosol, Paint preparation, spray paint, paint, paints, laquer, Auto-K, auto-k, Spray-Set, spray-set, Multona, multona, belton, Original colour tone, original colour tone, SprayMax, Spraymax, spraymax, Autok, Autocolor, Auto Color, Peter Kwasny GmbH, touch-up pencil, Touch-Up Pencil, Mini Mixingsystem, PaintRepair, PaintRepair, car repair paint, car paint, car repair, manufactoring company, manufacturing, industrial paint, do-it-yourself, DIY, decorative paints, coat of paint
  • Creases are created when for example the paint “lifts”  
  • If a synthetic resin paint is painted over with a different type of paint or with itself after it has dried, it will lift and/or form creases. Synthetic resin paints are oxidative drying paints, i.e. they dry in the air. It takes approx. 6 hours until the top layer of paint has dried. After this time the paint should no longer be painted over as a new coat of paint and therefore the re-application of solvents will make the lower paint layers swell.

 

 

My paintwork looks like the surface of an orange

Peter Kwasny, aerosol, Aerosol, Paint preparation, spray paint, paint, paints, laquer, Auto-K, auto-k, Spray-Set, spray-set, Multona, multona, belton, Original colour tone, original colour tone, SprayMax, Spraymax, spraymax, Autok, Autocolor, Auto Color, Peter Kwasny GmbH, touch-up pencil, Touch-Up Pencil, Mini Mixingsystem, PaintRepair, PaintRepair, car repair paint, car paint, car repair, manufactoring company, manufacturing, industrial paint, do-it-yourself, DIY, decorative paints, coat of paint
  • This painting result is created when the spray distance is too great. The paint that has already dried in the air, the so-called “spray mist“, is deposited on the surface and does not run any more. At the start, the surface is just rough and matt. After a thicker layer of paint, dents are formed, so-called “orange peel skin“.
  • This can be avoided when the spray distance is a constant 15 - 25 cm and the painting temperature lie between approx. 20 and 25°C.

 

 

 

Why are there colour tone differences in my paintwork? There are a number of reasons for this:

Peter Kwasny, aerosol, Aerosol, Paint preparation, spray paint, paint, paints, laquer, Auto-K, auto-k, Spray-Set, spray-set, Multona, multona, belton, Original colour tone, original colour tone, SprayMax, Spraymax, spraymax, Autok, Autocolor, Auto Color, Peter Kwasny GmbH, touch-up pencil, Touch-Up Pencil, Mini Mixingsystem, PaintRepair, PaintRepair, car repair paint, car paint, car repair, manufactoring company, manufacturing, industrial paint, do-it-yourself, DIY, decorative paints, coat of paint
  • On the one hand this may occur if the spray paint can is not shaken for long enough. Before spraying, the spray paint can should be shaken for at least 2 min., starting from the moment when the mixing balls can be heard. This is necessary as the pigments settle on the bottom of the can during storage.
  • Another reason may be that the paint used does not cover well and therefore too little paint is applied and the primer shimmers through and distorts the colour tone.
  • Likewise, it may be a result of the painting method itself. In the case of metallic paints, the painting result depends on the spray distance. If the spray distance is too small, the colour tone will be too dark. If the spray distance is too great, the final result is too light. To avoid this, first perform a spray test and compare the colour tone. The ideal spray distance is approx. 15 - 25 cm.

 

 

Why does my paintwork remain sticky and does not dry out?

  • The fresh paint is applied and stored at temperatures that are too low. At temperatures below 20°C, the air dries the paint more slowly e.g. for NC/AC paints, because the drying process involves the evaporation of the solvent. The drying process depends on the temperature. The colder it is, the slower the solvent will evaporate.
  • Otherwise, it may be a silicone resin paint – usually used for heat resistant paints. This needs to be heated slowly so that it dries completely.

 

 

Frequently Asked Questions (FAQ)

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What is a 1-coat paint?

These are all paint systems that do not need to be painted over with clear lacquer.

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What is a 2-coat paint?

The 2-coat paint system is being used more and more in the automotive industry for metallic colour tones. In order to repair this paintwork in exactly the right colour tone, a 2-coat paint system is used; a base paint that needs to be painted over with a 2-coat clear lacquer is used as a colour component.  The top coats are marked by their good covering properties. However they are matt and not weather resistant before they have been coated with the 2-coat clear lacquer.

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What is 1K?

(= 1 component) These are all products that are processed without the need for a hardener.

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What is 2K?

(=2 components) These are all products that are hardened/dried by adding a hardener. For spray paint can technology, this means: The paint and hardener are combined in one spray paint can. The hardener is in a separate container that is released at the press of a button and mixed with the paint. The 2-component system is particularly sturdy and resistant to scratches and weathering and also guarantees excellent product quality.

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Oxidative drying paint

The paint hardens due to the oxygen in the air. After hardening, it can no longer be removed with solvents.

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Chemical drying paint (2K)

The drying process is based on a chemical reaction with the hardener. When these paints are dry hard, they are particularly sturdy and weather resistant.

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Physically drying paint

Physically drying paint is paint where the drying process is based on the evaporation of the solvent. The paint can be removed again using solvents.

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Why does the paint need to an intermediate ventilation time?

An intermediate ventilation period of approx. 5-10 minutes is required between each coat of paint so that no over-coating is performed and drips formed. 

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What does fast to handling mean / When is the paint fast to handling?

The upper coat of paint has dried, however the surface is not completely ready – only after approx. 3-4 hours.

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When is the paintwork completely ready?

When the paintwork is fully dry hard - drying over night is ideal, at least 12 hours. The surface is only ready after this.

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Why won’t the used can spray any more?

The can’s valve is blocked. It was not sprayed empty after it was last used. Always ensure that you turn the can upside down and spray the valve empty after use.

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How should I store my tins?

Ideally, spray paint cans should be stored in cool, dry rooms however never at temperatures above 50°C.

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Where and how should I dispose of my empty tins?

The completely empty cans can be disposed of at the recycling centre in the “Green Dot” container. However, if there is still paint in the can, it must be placed into the special waste container.