TAPPI T549

Test Materials: TAPPI T549 requires flat, smooth materials like paper, plastic films, and other packaging materials. The surfaces must be clean and free of contaminants.
Test Process: The test involves placing the sample on a reference surface and measuring the force needed to initiate and maintain motion. Static and kinetic friction coefficients are determined.
Test Result Interpretation: Results show the friction coefficients. High static friction means more resistance to starting motion, while high kinetic friction indicates resistance during movement, essential for packaging material evaluation.