Actually, the KIT class indicates the approximate permeability of paper.
12 different classes were used about 10 years ago. Currently 9 different classes are famliar and used in the packaging sector.
The actual permeability always depends on the end use of the food packaging. These practical packaging cartons have been specially developed for packaging cakes, pies, cookies, and fatty foods.
The decisive factor is,
- How long food is packed in the paper and
- How high the fat or moisture content of the packaged food is
ETIVERA’s cake box does not use a plastic barrier layer and achieves class 9. Grease proof cardboard
