Polycarbonate safety goggles need an additional protective layer to make them efficient and reliable for any intended application. At times, you may be forced to consolidate more than one coating technology.

It is for this reason that plastic coating has become an integral part of a polycarbonate manufacturing industry. Broadly, there are 4 main types of plastic coating technologies. They include:

  1. Anti-scratch
  2. Anti-fog
  3. Anti-reflective
  4. Anti-ultraviolet radiation

Any goggles without these plastic coatings are considered unsafe for both industrial and domestic applications.

safety goggle coating technology

Generally, the art of coating plastic face shields aim to enhance the appearance and performance of polycarbonate safety goggles.

Anti-scratch coating for plastics

Under normal circumstances, safety goggles are treated with anti-scratch coating. This adds a protective layer that protects the safety goggle surfaces from scratches.

Whether you drop the goggles or during the normal cleaning process, their surfaces will not acquire any scratches. Ideally, this process makes the lens durable and increases its productive lifespan. In the long-run, this will translate to both efficiency and cost effectiveness.

As a matter of fact, polycarbonate sheets are strong and impact resistant. However, their surfaces are susceptible to scratches. This implies, even a small abrasive force, can cause scratches on its surface.

Consequently, the surface will lose its transparency, thus, you may begin to blur vision. The only way to solve this coating polycarbonate safety goggles with the right anti-fog coating for plastics.

Which anti-scratch coating is right for you?

suface of Anti Fog Anti Scratch PC Sheet

There are quite a number of anti-scratch coating. Not all of them offer a perfect solution to this problem. First, you need to examine their performance. This is based on the degree of hardness and the ability to consolidate them with other technologies.

There are 5 distinct types of anti-scratch coating, classified based on their capability. These include:

  1. General use coating with a hardness of >1H
  2. Upgraded anti-scratch coating with a hardness of >3H
  3. Superior anti-scratch coating whose hardness ranges from 8H to 9H
  4. Thermoformable anti-scratch coating
  5. Optical anti-scratch coating

You can choose from these five grades of anti-scratch coating.

Apart from this, the ability to consolidate it with other technologies is also an important process. This is because, anti-scratch coating will only protect the surface from abrasive forces. However, other natural phenomenon such as fog or reflection may still be a problem.

To solve this, you can consolidate the anti-scratch coating with other technologies such as:

  1. Anti-glare
  2. UV resistant
  3. Anti-graffiti
  4. Anti-fog (one side of goggle lens, anti-fog coating while the opposite side anti-scratch coating)

Of course, this product is formulated for both indoor and outdoor applications. It doesn’t matter where you intend to use the safety goggles. They will protect you in all environmental conditions.

To ensure this coating binds permanently and uniformly on the surface of your safety goggles, you need to choose a reliable technology.

In most cases, you can use flow coating or dip coating techniques. This ensures the entire surface is uniformly coated with the right coating. Moreover, the curing technology that has proven to be reliable are UV and thermo technologies.

In other words, you need to choose anti-scratch coating for plastics that meet the above criteria. It is a sure way to keep the surface of polycarbonate sheet goggles free from any scratches. Hence, you will be guaranteed of superior optical properties (class 1), even in harsh environmental conditions.

Anti-fog coating for safety goggles

Whenever there is a fluctuation in temperature and humidity, there is a high possibility of fogging. The fog makes it nearly impossible to see through safety goggles. Thus, you have no option but, to install anti-fog coating fog polycarbonate sheets.

Generally, goggles fogging is a major risk for sports persons, industry workers or first responders to emergency situations. This is why there was need to develop a permanent anti-fog solution.

With an effective anti-fog solution, your safety goggles will still remain clear as you transition from one weather condition to the other.

Which technology do anti-fog coating use?

anti fog film

The dip coating and flow coating are primary technologies you can use in this process. Of course, you can use either thermal or UV curing technologies in the curing process.

The anti-fog coating technology uses hydrophilic technology to eliminate fogging phenomenon. It mainly involves molecular interaction between water and hydrophilic ingredients. Apparently, it is a safe and sustainable way to eliminate fog. There is no chemical reaction as in the case of other anti-fog sprays.

Hydrophilic is a “water loving” substrate. That is, it tends to attract water molecules. For this reason, water droplets spread uniformly to form a thin transparent layer. Basically, the idea here is to reduce the contact angle between water molecules and the goggle surface.

Normally, this is a thin, uniform layer that allows for maximum transmission of light. That is, there is no light distortion or refraction. Obviously, you will be able to see clearly through these safety goggles.

In short, this is a cost effective, reliable and environmentally friendly way of eliminating fogging problem.

As I had mentioned earlier, you may desire to eliminate both scratches and fogging phenomenon. In such circumstances, you have no option but, to use the two technologies on polycarbonate sheet.

In such situations, you will have anti-fog coating on one side of the polycarbonate safety goggles and anti-scratch coating on the opposite surface. You cannot combine the two on one surface.

At this point, you have eliminated two annoying phenomena – scratches and fog. However, this is not all. There are other factors you need to consider and it is the reason you may invest in anti-ultraviolet radiation treatment.

Anti-ultraviolet treatment for safety goggles

Ultraviolet radiations, whether artificial or natural; can be dangerous to your eyes. This is why the polycarbonate lenses come with UV filters. Over exposure to the UV radiations can cause retinal damage or cataracts.

By adding UV filters, you shall have blocked the harmful radiations. Unlike the anti-fog coating, you can consolidate UV treatment with anti-scratch coating.

The polycarbonate safety goggles we use may have all the three, depending on where you intend to use them.

Remember, a good safety goggle should prevent fogging, scratches and filter out UV radiation. In fact, welding goggles or eye shields must have effective and reliable UV filters.

Anti-reflective coating for goggles

Like glass, polycarbonate goggles may also reflect light either from the front or the back of your lens. The anti-reflective coating is also a thin layer that can be consolidated with anti-scratch coating.

With anti-reflection coating, the goggle lens become nearly invisible, making it possible for one to focus on your eyes rather than the distracting reflections. Moreover, it also eliminates glare caused by light reflected from the lens. This makes the goggles more comfortable both for reading and driving.

Conclusion

A polycarbonate lenses without all the necessary coating can put users at risk. More importantly, users will not be able to see clearly.

This is the main reason you need to install anti-scratch, anti-fog, UV treatment and anti-reflective coating for all your polycarbonate goggles.