Bostik adhesives developed anti-fog coatings for flexible film lids that stop water droplets from forming and extend freshness of refrigerated foods with moisture, such as produce.

The technology helps keep lids clear so customers can see the food. The co-polyester coatings combine anti-fog capability with heat seal functionality, requiring one processing step instead of two, an advantage over other products, Bostik says.

The coatings, debuted at PACK EXPO this year, have excellent seal strength to PET with a smooth peel when opening. They are available in an extrudable grade (Vitel 1922AF) and a solvent-based alternative. They work with existing converting equipment.

“We wanted to formulate solutions that help converters to simplify the process of producing anti-fog lidding films while enabling them to meet the requirements of both brand owners and consumers,” says Deepa Puthanparambil, Bostik’s senior chemist for the Global Industrial Adhesives unit. “We are proud to say that our anti-fog heat seal coatings address needs across the entire value chain and fulfill an otherwise unmet need in the market.”

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