APPARATUS TO DETERMINE COEFFICIENT OF FRICTION

摘要

The invention provides an apparatus for the continuous measurement of the dynamic coefficient of friction and/or static coefficient of friction of a material, which comprises at least the following: A) two rotating rollers, R1 and R2, B) one roller S1, C) optionally, one static roller S2, D) two sets of force detectors, F1 and F2, and wherein S1 is located between R1 and R2 to form a wrap angle (?), and wherein the wrap angle (?) is less than 90°, and wherein F1 is attached to R1, and F2 is attached to R2. The invention also provides an apparatus for the continuous measurement of the coefficient of friction (dynamic and/or static) and the pull force of a material, which comprises at least the following: A) two rotating rollers, R1 and R2, B) three rollers, R3, R4 and R5, C) one roller S1, D) optionally, one static roller S2, E) three sets of force detectors, F1, F2 and F3, and wherein S1 is located between R1 and R2 to form a wrap angle (?), and wherein the wrap angle (?) between R1 and R2 is less than 90°, and wherein R3, R4 and R5, are each located upstream from R2; and wherein F1 is attached to R1, F2 is attached to R2, and F3 is attached to R3.