Lightness meets performance

Vetropack’s Ethera bottles combine elegance and durability with reduced CO₂ impact. From lightweight to ultra-lightweight, every bottle meets strict alpha factor standards — proving that lightness can be strong.

Lighter, but more stable; fewer resources, but higher performance: packaging manufacturers are increasingly confronted with demands like these. As a natural raw material that is infinitely recyclable, there’s no doubt that glass offers clear advantages over other materials when it comes to sustainability. But like every other sector, the glass industry is aiming to improve resource efficiency – so manufacturers are searching for more ways to reduce material usage without compromising the performance of glass packaging.

Vetropack’s dedicated brand for lightweight glass bottles, created to unite sustainability with uncompromising performance. Derived from the Greek word aither (pure air or heaven), Ethera captures the essence of lightness while ensuring durability and premium quality.

Alpha factor – Ensuring strength in lightweight bottles

Products promoted under this brand meet strict alpha factor criteria to ensure durability while lowering CO₂ impact. Ethera covers lightweight, super lightweight, and ultra lightweight bottles, defined by an alpha factor below 11.81. 

The alpha factor is a performance index linking a bottle’s geometry to its mechanical strength, predicting resistance to internal pressure and external stress. It is crucial for lightweight bottles, ensuring durability and safety during filling, transport, and consumer use while reducing material and emissions.