These flexpack grades solve the contaminant migration problem while allowing the environmentally sustainable use of recycled content in packaging materials.
“Through this partnership, we have been able to solve a problem that is becoming increasingly critical in the packaging market,” said Rosemarie Asquino, Sappi specialities sales and marketing director. “Brand owners and converters will be able to take advantage of the performance and strength of Sappi grades, preventing migration of mineral oil, while also keeping their environmental footprint optimal by using outer packaging materials that include recycled paper or board. With our new MOB coating, this is possible without any risk of food contamination from those recycled fibres.”
In the past, food migration issues have arisen as a result of cardboard packaging materials containing recycled fibres for which one of the primary raw materials is newspapers. Newspaper printing inks, as well as many commercial printing inks, contain mineral oil as solvents. Because the printing ink components are not completely removed during paper and cardboard recycling, mineral oil components can remain in the fibres. If these substrates are used for food packaging applications, the mineral oil components can migrate from the cardboard into the foodstuffs, even when foodstuffs are protected by an inner bag. Printing inks used for printing packaging materials can also be a source of mineral oil contamination.
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