Method and device for measuring the sliding friction coefficient between flexible, flat sheets of material

摘要

The method of measurement serves to determine the sliding friction coefficient between flexible, flat sheets of material such as, for example, for paper test strips A and B. The two test strips A and B to be measured are mounted with their ends parallel to the pulling direction and their loose ends are fed in the opposite direction through a slit disposed transversely to the pulling direction and formed from a roller pair (8; 9). The oppositely situated test strips A and B are loaded with a loading force FN determined by the roller pair (8; 9) and, optionally, by loading weights (11). The actual measurement is performed by moving the test strips A and B parallel to the pulling direction at constant speed in opposite directions through the roller slit (14), the frictional force of the test strips A and B which glide over one another being measured by means of a force transducer (5). IMAGE