| 摘要 |
<p>PURPOSE:To enable early finding of abnormality without damaging a yarn and remarkably decrease the loss of product by radiating near infrared rays to a running fiber yarn and effectively determining the amount of oil attached to the yarn from a value corresponding to the absorbance, etc., of the infrared rays. CONSTITUTION:The amount of an oil attached to a fiber yarn is determined by radiating near infrared rays of 1100-2500nm wavelength range to a fiber yarn 1 running at a speed of as high as >=3,000m/min and determining the amount of oil attached to the yarn from a value corresponding to the absorbance, transmittance or reflectance of the infrared rays. The determination is preferably carried out e.g. by using an apparatus composed of a means for generating the near infrared rays, a detection part 4 to irradiate the running fiber yarn 1 with the near infrared rays and detect the transmitted or reflected near infrared rays and a means for calculating the amount of oil attached to the fiber yarn by receiving the detection signal from the detection part 4.</p> |
