#AskGlaston Episode 17: Why should you use an air flotation system instead of rollers for 2 mm glass tempering?

This week, we’re dealing with questions regarding the technology of tempering 2 mm glass and the rainbow color shades on automotive side glasses:

  1. Today, there are solutions for tempering 2 mm glass with normal rollers. Why have you developed the air flotation system as your solution?
  2. We can see rainbow color shades in the sunlight on the side glasses of truck cabins. Is this acceptable or is it a defect that may cause breakage in the future?

For this week’s questions, see our full video response below!
As always, remember to learn, share and succeed!

Today, there are solutions for tempering 2 mm glass with normal rollers. Why have you developed the air flotation system as your solution?

Our 2 mm concept, GlastonAir, is based on air flotation technology that provides the best possible quality for 2 mm glass. The other option, of course, would be to do the tempering just with roller technology. With rollers, however, you have to overheat the glass so much that it will have a negative quality impact.

We can see rainbow color shades in the sunlight on the side glasses of truck cabins. Is this acceptable or is it a defect that may cause breakage in the future?

With color shading, we’re referring to anisotropy, also known as the iridescence pattern in the glass. This is not considered a defect. It happens with all heat-treated glasses. This phenomenon is usually seen on automotive glasses as well as on bigger facades. We have a lot of information available on this subject in Glastory. Please read more from the links below:

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Kimmo Kuusela

Joined Glaston in 2005 and has worked in different positions since then. Kimmo has and gathered extensive hands-on experience on practically all parts of the glass processing chain. Currently working as Sales Director for Glaston in North America.