In a new example, Kraiburg (Waldkraiburg, Germany) says that its TPE is now being used in the earpieces of uvex pheos safety glasses.
"We have been working together with KraiburgTPE successfully for ten years," says Harald Frank, product
group manager at uvex. "In the past, we used TPE in our safety
spectacles primarily for seals and end elements. Now, for the first
time, we have added a soft component to the earpiece. The result is
quite attractive and recently even received the iF product design award
Established in 1953 in Germany, the iF award recognizes innovative
product design. The new safety eyewear was also named "2012 Product of
the Year" for plastics consumer products by the German Association of
the Plastics Manufacturing Industry.
Judges noted that the glasses fit the face well and have flexible side
arms with variable inclination that can be individually adjusted. An
integrated "Softflex" zone means that the side arms adapt to different
head widths. The soft TPE ear pieces and the Softflex zone at the
temples help improve fit.
The ear piece is manufactured with two- component injection molding. One
of the keys was working out optimal processing conditions that would
allow good adhesion to polyoxymethylene (POM).
Frank said that the goal of the development engineers was to introduce
lightweight safety spectacles with a sporty design that offered optimum
protection and high wearing comfort. He said that the two-colored
earpiece boosted stylishness of the glasses.
One of the reasons that TPEs and other polyolefins are advancing in
health-related fields is their environmental profile. They are free of
polycyclic aromatic hydrocarbons, phthalates and allergens and are RoHS
and REACH compliant.