MEASUREMENT OF THE COEFFICIENT OF FRICTION BETWEEN SAMPLES OF THE SAME CLOTH

Abstract

This paper describes an instrument for recording the coefficient of static friction between samples of cloth by reciprocating one sample and recording the resultant motion of the other when restrained by springs. Some test results are given for cloths of different structure and those made from yarns spun on normal and high-draft worsted systems, and for the effects of regain and pH on cloth friction. Each cloth was tested against itself, the pairs of samples used being selected from the same piece of each cloth.