Traffic Film Removal with Fiber Laser cleaning

Traffic film is a problem of the modern age, where pollution from vehicles and the roads are creating a layer of dirt and filth, which deposits itself in all manner of objects. Fiber lasers are a proven way of cleaning off traffic grime and dirt using ablation methods. We go on to discuss this in our latest application insight.

What is traffic film?

This is a layer of debris/contamination, which lies on the surface of all forms of road and aviation transport, as well as static objects such as buildings and signage, etc.

Types of traffic dirt and contaminants include:

  • Contaminants from vehicles: exhaust fumes (including Sulphur, Vanadium and hundreds of other chemicals), oil, soot, unburnt fuel and additives, etc.
  • Contaminants from the road: bitumen, cement dust, grease, grit and salt, oil (various types) and tar, etc.

Other airborne contaminants, which aren’t traffic-related include acids (especially in acid rain), bugs, dust, pollen, salt crystal and smoke, etc.

The ablation process explained

The object (or area of an object) which has the surface contamination is focused on by the fiber laser’s beam. Layer by layer the film is removed, with particular emphasis being placed by the user to only ablate the contaminant layer and not the underlying material.

Lasers are ideal for this as they provide absolute programmatic precision and control.

Everyday objects which suffer with traffic film

Many people think traffic film only deposits on transport vehicles, whilst this is true, there are other objects which are impacted by traffic film. Any items located outdoors can be affected including (as just a few examples):

  • Buildings – any building can be affected, particularly those which are roadside
  • Signage – these are often roadside and can be seriously affected, examples including advertising posters, road signs, traffic signs and many more
  • Stonework – various types of stonework including monuments and statues, etc.
  • Vehicles – all types of vehicles including planes, cars, vans, trucks, lorries, coaches

Why remove traffic film with a fiber laser rather than manually wash it?

It’s an obvious question and there are a number of reasons why fiber lasers should be used, here are just a few examples:

  • Health – film is full of toxic substances; fiber laser cleaning is much healthier for the staff member than manually cleaning would be (which involves the use of chemicals)
  • Precision – can be more precisely and thoroughly cleaned through a fiber laser. Being typically “ground in”, this type of dirt is stubbornly resistant to hand cleansing
  • Reduced substrate damage – lasers carefully protect substrate materials, where manual cleaning with human intervention would struggle to protect substrates in the same way

The reasons why traffic film needs to be removed

Here are just a few of the reasons why it’s a good idea to remove this dirt layer:

  • Aerodynamics – research has shown that clean vehicles are more aerodynamic as they are smoother and have less friction through the air
  • Aesthetically pleasing – a major problem is it makes everything look dirty and filthy, so cleaning the items will be much more “appealing on the eye”, this is particularly the case for statues and monuments
  • Obscuring identification – if film covers the vehicle registration number on vehicles or other important information (e.g. house number, or town names on a roadmap), then the purpose of the number/sign will not be achieved
  • Safety – dirty vehicles are less visible to other drivers. Dirty cars internal parts will wear more quickly and are less safe to drive and in addition dirty windscreens affect visibility, which is a driving hazard
  • Sale chances – anything will sell better when it is better presented. Therefore, removing a layer off cars, houses, etc. can only increase the likelihood of sale
  • Reduce rust and corrosion – on paint and metal parts, chemicals can be deposited which over time will create corrosion and rust. Prevention is better than cure, it’s best to clean the layer before it causes real and permanent damage

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