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Coating prevents fog formation

Bostik’s anti-fog coating caters to consumer demands for transparent packaging while simplifying the converting process.

Bostik's anti-fog coating creates a thin, transparent water film that lets light pass through for clear visibility. Photo courtesy of Bostik.
Bostik's anti-fog coating creates a thin, transparent water film that lets light pass through for clear visibility. Photo courtesy of Bostik.

Bostik intends to bring some clarity to the packaging market. The Wauwatosa, Wisconsin-based adhesive specialist developed an anti-fog coating for refrigeratable flexible packaging to address consumer preferences for better visibility of food products while also streamlining the converting process.

Bostik spent four years developing the Vitel 1922AF, an extrudable, semicrystalline, saturated copolyester resin that prevents fog formation on flexible packaging that houses fresh food that expels moisture, such as fruits and vegetables, during refrigeration. When applied to the packaging’s lidding, the anti-fog coating causes water vapor in the air and migrated moisture from the food to create a thin, uniform, transparent film of water instead of water droplets. By altering how the water forms on the lid, the coating ensures that the packaging lid remains transparent with minimal light refraction and fog creation. 

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