Preform manufacturer SGT has developed, in partnership with colouring specialist Avient, a new single layer dairy preform with a very low mineral content (less than 4%).
Intended for the dairy products market, this 38 mm neck preform incorporates a new additive technology called ColorMatrix Lactra Four One Zero which is claimed to offer superior whiteness to the bottle and high protection for photo-sensitive liquids.
The ColorMatrix Lactra Four One Zero formula allows to block light up to 99.9%, even with a low wall thickness (200 microns). Dairy products, such as UHT milk, sensitive to oxidation are thus protected and kept longer, up to 6 months, without altering taste or sensory and nutritional properties, say the companies.
This 100% recyclable single-layer preform can be integrated into a closed bottle-to-bottle circuit and can contain up to 100% rPET. The entire 38 mm neck range can be produced in a single layer, with lightening possibilities, and is claimed to adapt to all production lines.