Milliken Chemical's new polymeric UV absorbing additive, ClearShield, is a homogeneous liquid polymer for PET packaging. It can block all UV rays with a wavelength above 390 nm. Because it is a transparent polymer, it will affect the clarity and color of PET containers, and it will not affect the quality of the products. It is a product that FDA allows for PET packaging of foods and beverages. Source of information: pack.cn