Eastman says that Vitiva PET blocks nearly all UV light up to 370 nm. In-depth studies at Eastman on popular sports beverages and fruit juices show that colorants such as FD&C Red #40 and FD&C Blue #1 begin to degrade after only a few hours in the sun or under a UV lamp. Vitamins C and B6, among others, also show a considerable decrease in their efficacy after short UV exposure. Products with 370 nm of UV protection, however, remained undamaged even after prolonged exposure to direct sunlight.
A drop-in replacement for standard PET, the new material requires no extra capital investment in machinery or tooling, according to Eastman, and produces no plateout on molds or dryers.?MM
IMM - June 2006