Measuring Nylon Carpet Yarn Heat History by Remote NIR Spectroscopy Part I: Development of Laboratory Remote Fiber-Optic Measurements

摘要

Heat setting of nylon carpet yarns is one of the most critical processes in carpet manufacturing. The temperature at which the yarn is heat set--the heat-set temperature (HST)--is one of the most important operational variables in the process. Previous investigations with laboratory, bench-top, near infrared (NIR) reflectance instrumentation had shown NIR to be a simple, rapid, and accurate laboratory technique for measuring the HST of nylon carpet yarns. Teh potential of NIR for measuring the HST/heat history of nylon carpet yarns directly on the carpet yarn bobbin and in the manufacturing area is evaluated in a two-phase program.