Presto’s Coefficient of friction tester is designed to measure the coefficient of frictional force of the plastic films, pipes, sheets and papers. The aboratory test device is designed in accordance with the standards ASTM D 618, D883 and D 1894 standards. The device is used to measure the kinetic and static friction of the test specimens when it slides over itself or other substances under some standard conditions. It is important to determine the coefficient of frictional studies to evaluate the stacking ability of the plastic films and sheets. These studies enable the manufacturers in plastic industries to prevent fatal accidents due to frictional forces faced by the material at the time of transportation, loading, and packaging.
The coefficient of frictional force testing helps to determine the degree of abuse a plastic film will successfully endure, without damaging the contents. The Presto Co-efficient of friction tester measures the coefficient of slipping friction. It is easy to use and portable testing device which is designed ergonomically to test the friction that occurs between the two surface that are laminated with thermoplastic materials such as polyethylene, plastic films, etc.
These additives have different degrees of compatibility with the film matrix. It is a well-known fact that the samples usually exude or bloom to the surface hence lubricates it and makes the material more slippery. Since blooming is not uniform on all areas of the film surface, the results of all the tests are not reproducible. The frictional properties of the plastic films and sheets depend on the uniformity of the rate of motion between two surfaces.
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