What is the Dinorex^™?

NEG chose the name Dinorex^™, a portmanteau meaning king of the dinosaurs, based on the image of the Tyrannosaurus Rex, known to be the strongest of the dinosaurs. The name indicates the strength and toughness of the glass against cracks and scratches.

The secret behind Dinorex^™’s shock resistance

When glass containing sodium ions (Na⁺) is soaked in a potassium nitrate solution containing potassium ions (K⁺), the Na⁺ on the glass surface change places with the K⁺ in the solution. This process is called ion exchange. The K⁺ have a larger diameter than the Na⁺ and exert compressive stress on the glass surface. This strengthens the glass enough to withstand a hammer blow without breaking.

※Compressive stress
When large-diameter K⁺ change places with small-diameter Na⁺ on the surface of a glass sheet, the larger ions are squeezed into a small space. As they try to expand, they expand the volume of the glass surface.
Of course, the actual volume of the glass does not change, so the ions are compressed to fit on the glass. This squeezing force is compressive stress.
Consequently, even if a force that would crack the glass surface is applied, the compressive stress cancels it out and stops the crack worsening. Thus, the glass is harder to smash.

Strong Point

• Superior chemical strengthening properties (high CS, deep DOL)
• High productivity
• High transmittance

Dinorex UTG^™

Strong Point

• Superior smooth surface
• Uniformity of thickness distribution
• Excellent bending properties