TÜV test: Glass Coating 7601 on a car windscreen

TÜV SÜD (ÉMI-TÜV SÜD Kft Central laboratory) has tested CCM 7601 Glass/Ceramics Coating on a windscreen.

Here are the results:

Hardness/Durability and Scratch Resistance

The Pencil Hardness test measures hardness in single unit bands and the coating is noted as being 9H; however, testing using the Erichsen procedure and the scratch resistance testing indicate that the coating is at the upper end of the 9H band, as clearly the coated surface is more resistant to pressure and associated abrasive action.

The Erichsen test informs us that a scratch is induced on the non-coated windscreen glass at a pressure of 5N (newtons) and a scratch is induced on the coated surface at 6N. This test confirms that the coated layer is “tougher” than the uncoated glass layer. We have used the term “tougher” as the liquid glass layer is not simply hard but it is both hard and flexible at the same time. This is one of the wonders of the Liquid Glass technology. This aspect of hardness plus flexibility enhances the overall durability of our coating.

The scratch test, (using an 80 grit abrasive) further confirms that the coated surface is significantly tougher than the non-coated glass.

Hydrophobicity

The testing clearly indicates that the 7601 coating is hydrophobic and a that water will run off the windscreen when the vehicle travels at 50km/h but it is important to note that the 7601 coating offers long term hydrophobicity. Furniture polish will create a hydrophobic surface but it offers almost zero durability. The coating is inherently tough and hydrophobic.

Light transmittance

The 7601 coating does not perceptibly interfere with light transmittance and so this means that the coating will not impact negatively, in fact the coating significantly improves visibility when driving at night in rainy conditions. It of course also improves visibility when driving during the day.

Ice removal from windscreen

In all instances ice is easier to remove from a coated windscreen, this effect is very pronounced with frosty conditions. In addition the coating enhances visibility when driving in snow. Removing ice with a suitable ice removing blade will not damage the coated surface.

Conclusion

The TÜV test formally confirms that the 7601 is an invisible, hard (we prefer the term "tough") and durable hydrophobic coating which offers water dispersion from the screen at 50km/h.