Patent ID: 6087608
Filing Date: 2000-07-11
Classification: D01G,G01N,Y10S

Abstract:
A method of processing fiber comprising the following steps:(a) removing fiber tufts from a series of fiber bales;(b) pneumatically conveying the fiber tufts in a duct;(c) forming images of the conveyed material as it passes through a first location of the duct;(d) determining at least one of a degree of lightness and a color of the fiber tufts by an image processing device;(e) determining a degree of lightness of foreign substances, conveyed with the fiber tufts, by the image processing device;(f) comparing the measuring values obtained by the image processing device in steps (d) and (e) with at least one settable limit value;(g) initiating a switching operation when said limit value is exceeded for branching off the fiber tufts to a waste receiver from the duct at a second location thereof; said second location being situated downstream of said first location as viewed in a conveying direction of the fiber tufts; and(h) establishing a sensitivity of performing step (g) within defined limit values for all types of fiber material.