Current status and development trend of quality inspection technique of ring spun yarns

This paper introduces the current status and development trend of quality inspection technique of ring spun yarns,including the off-line detection techniques and related instruments for raw cotton,semi-product and yarn.It points out that the development for off-line detection trends towards instrumentation,automatization,high-speeding and differentiation.A discussion about the developing state of on-line quality inspection is made by taking auto-leveling,foreign fiber detection and electronic clearing as examples,considering that it is characterized by the full range,information technology and systematization,covering the entire yarn-spinning process including ginning.The means of combining on-line and off-line detections and developing and utilizing various expert systems will make it possible to monitor the entire ring spinning process,there by further improving the quality and stability of ring spun yarns.