Fat-repellent impregnation of paper, lipophobic properties, Kit test
Formerly 3M kit test, classification of fat impregnation of papers by wetting tests with solutions based on castor oil, n-heptane and toluene. If the fat impermeability of plastic coatings/lacquers, e.g. on paper, is to be tested, please select the "fat permeability/fat density" method.
In short — AI-generated
The Kit test determines the fat-repellent properties of paper and paperboard surfaces. A series of test liquids with varying surface tensions, consisting of mixtures of castor oil, n-heptane, and toluene, are applied to the surface to identify the liquid with the lowest surface tension that does not cause wetting or staining.
The result is expressed as a Kit number, where a higher value indicates better resistance to fat and oil penetration. This value helps developers select suitable paper grades or coatings for packaging applications where contact with fatty food products is expected.
Text is AI-generated; based on test method data curated and verified by Innoform.