Fat permeability/fat density
Testing of paper, coated paper or plastic films with dyed palm kernel fat. The sample is coated with the test fat on the test side, then the glass plate and, if necessary, additional weights are placed on top. After the exposure time has elapsed, the fat passages with a size of up to 1 mm visible to the naked eye on the display paper within the defined test area are evaluated. If only fat penetrations up to 1.0 mm are observed, the test is considered to have been passed; in the case of fat penetrations with a size above 1 mm, the test is to be carried out under a more moderate test condition (a "worse" fat permeability group).
In short — AI-generated
This test determines the resistance of paper, coated paper, or plastic films to the penetration of fats. A dyed palm kernel fat is applied to the sample surface, which is then covered with a glass plate and weighted to simulate contact pressure over a defined period.
The result indicates whether fat penetrates the material, with spots larger than 1 mm signifying a failure under the tested conditions. This helps packaging developers select materials that prevent grease stains or leakage for fatty food products.
Text is AI-generated; based on test method data curated and verified by Innoform.