Original article by Stephanie Cernivec
When it comes to glass bottles, however, the decorative inks from Hartness International, a division of Illinois Tool Works Inc. (ITW), are enabling the packaging format to become even more transparent by eliminating the label. The company uses a vertical ultraviolet (UV) ink solution that enables it to print directly onto the glass using any color on the Pantone spectrum as well as specialty effects, such as metallic, thermochromic and frost decorations. The inks are organic and do not include bisphenol A (BPA) or volatile organic compounds (VOCs), says Sean Hartness, vice president of the Greenville, S.C.-based company.
“The beauty is instead of having maybe only three colors of glass as they have predominantly now — which is amber, green and flint — the producer can actually color glass any color that their team wants … and the glass still recycles as native flint glass,” Hartness explains.