Page 57 - Glass-Technology International no. 2/2018

process and raises the bar
for customer satisfaction.
EVERYONE UP TO
THE CHALLENGE
Switching older lines to
the latest tempering lines
is one solution for achiev-
ing evenness in heating
and cooling. But there’s a
lot that can be done with
See where I’m going with older lines as well, such as
Ever looked at a building’s glass façade this? Anisotropy doesn’t adjusting heating time and
affect the mechanical transfer time – or running
through polarized sunglasses? If so, strength of glass, so it’s not shorter loads. By adding
a safety issue. Still, aes- a single smart tool, glass
you may have noticed patterning or thetics are often the main processors can meet this
rationale for using glass in new challenge.
spotting on it. This phenomenon is called a project and are also what Some years from now, the
is driving this discussion industry might finally come
anisotropy – or iridescence – and around anisotropy. Now to an agreement on clear
that we have a method for
standards for anisotropy.
scanning the anisotropy of The Glass Innovation Insti-
occurs in tempered glass as a result of each glass piece produced, tute, for example, is aiming
there’s nothing stopping to develop some universal
heat treatment. Although there are still producers from agreeing standards. When this hap-
on suitable levels of it with pens, technology that en-
no standards for acceptable anisotropy their customers. The im- sures your processed glass
portant thing is that both meets standards will not be
levels in glass, some breakthrough in parties understand how just a helpful tool – it will
the evaluation of anisotro-
be a necessity.
py depends on the system
regard to the phenomenon has taken used – and also that cur-
rently there is no right or
place recently. wrong way to do it.
In 2017, Glaston launched
an online solution that is
up to the challenge of visu-
Glaston Finlan
alizing and quantifying the Glaston Finland Oy y
again as an example. glass manufacturers set level of anisotropy in heat-
Standards define certain their own project- or cus- treated glass – iLooK Ani-
limits for roller wave de- tomer-specific “standards” sotropy. Scanning glass for
fects, but the limits are rather than relying solely anisotropy gives processors
generally quite loose. In on official standards. And a new tool to continuously Vehmaistenkatu 5
many cases, a glass that even if official standards monitor quality, test mock- 33730 Tampere - Finland
passes a standard can still are used, supplier selec- ups, experiment with ma- Tel.: +358 10 500 500
be far from good aestheti- tion in many cases is based chine settings and improve Fax: +358 10 500 6190
E-mail: info@glaston.net
cally – again, subjectively on the general quality of production methods. It www.glaston.net
speaking. This has led to a the end product a supplier allows for new improve-
situation where tempered provides. ments in the tempering

Glass-Technology International 2/2018 55