Milliken Chemicals ClearShield® Colorless UV Absorbers bring value to PET packaging by effectively protecting UV-sensitive contents from degradation while maintaining the material’s clarity and transparency.
Brand owners are responding to consumer demands by replacing artificial colorants and preservatives with more natural ingredients in drinks as well as in solid food, vitamins and other packaged products. But this creates a new challenge, since exposure to UV light can degrade such ingredients, and negatively impact the color, appearance, flavor, fragrance or nutrient value of the contents.
ClearShield offers an efficient way to protect beverages and other UV-sensitive contents against harmful light exposure by incorporating the UV blocker into the PET package itself. These absorbers filter 95% of UV light at up to 390 nanometers and are effective at very low loadings, enabling the use of more highly UV-sensitive natural colorants in the packaged products.
To ensure product consistency, and hence brand integrity, the contents of PET packaged goods must be protected from exposure both to sunlight and to indoor lighting during storage, distribution, retail display and post-purchase storage. Consumers also like to be able to see the contents of what they’re buying.