It is based on a unit length of 840 yards, and the count of the yarn is equal to the number of 840-yard skeins required to weigh one pound. Under this system, the higher the number, the finer the yarn. The rack or frame located behind a tufting machine which holds the cones of pile yarn that feed into the needles of a tufting machine. Crimp In fiber, a nonlinear configuration, such as a sawtooth, zigzag or random curl relative to the fiber axis. Most synthetic fibers, both staple and filament, used in carpets are crimped.
Fiber crimp increases bulk and cover and facilitates interlocking of staple fibers in spun yarns.
Crockfastness The resistance of transfer of colorant from the surface of a colored yarn or fabric to another surface, or to an adjacent area of the same fabric, principally by rubbing. Crocking The removal of dye from a fabric by rubbing. Crocking can be caused by insufficient dye penetration or fixation, the use of improper dyes or dyeing methods, or insufficient washing and treatment after the dyeing operation. Crocking can occur under dry or wet conditions. The shape of a fiber when cut perpendicular to its axis.