Digital Magazine

Ashland Coating System Is Patented

DUBLIN, OH | Ashland has received US patent 9,539,795 for its PureKote 23589 dispersion and PureKote 21412A cross-linking agent coating system. The technology tandem creates a coating for flexible packaging that is said to be water- and scuff-resistant and to improve consumer appeal with soft-touch feel and matte finish. Company says the coating system may be used safely in food packaging applications regulated by the US Food and Drug Administration, including paper and plastic bags, pouches, lidding films, foil bags, and sachets.

“This is another example of how Ashland’s scientists are always solving our customers’ challenges,” says Suzanne Rowland, VP of Industrial Specialties, Ashland. “This technology not only makes their products more alluring, it makes them more usable, and that can be the difference between a successful product and an ordinary one.”

PureKote 23589 coating delivers “soft touch” properties and can be pattern applied creating a packaging experience with both opaque sections and clear “windows” that allow consumers to see the product inside.

Coatings are said to be well suited for packaging used on foods and pet foods labeled natural or organic. They can also be used on pressure-sensitive labels, boxes, and other non-food applications.

“This coating is safe for use with any food type and for some elevated temperature conditions,” says Catherine Heckman, industry manager, laminating adhesives and coatings, Ashland. “PureKote coating is print-receptive and can be used with foils, Nylon, PET, OPP, vinyl, and other plastic film substrates. It can be applied via gravure or flexographic process with an enclosed-chamber doctor blade.”

PureKote 23589 is a water-based dispersion in liquid form. PureKote 21412A is a 100% solids crosslinking agent. As a top coat, the system delivers 60 deg gloss in the 0.5–4 range, depending on the substrate used.

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