Monitoring the uniformity of tows
AssigneeHoechst Aktiengesellschaft
InventorsBernd Huber, Richard Neuert
Life of this patent
Estimating the term…
Abstract
A method monitors and measures the uniformity of tows with mechanical sensing elements in the course of production on a tow line. The tension of the running tow is measured upstream of a transport roll arrangement and is utilized as a measure of the uniformity of the tow. Irregularities in the tow result in tow tension determination outside a predetermined tension range, and when the determined tension measurement is outside that range the irregular tow portions are remove. Also, the frequency of tow tension determination outside a predetermined range may be used as an indication of tow quality and for removing substandard tows.
Claims4
A method for monitoring the uniformity of tows with mechanical sensing elements in the course of producing a tow line comprising the steps of transporting a tow at a predetermined speed by a roller arrangement, measuring tow tension upstream of the roller arrangement, detecting any irregularity of the tow passing the roller arrangement by detecting tow tension increases and decreases, establishing predetermined positive and negative tow tension thresholds, indicating an irregularity in the tow when the measured tension exceeds either threshold, and triggering fault measures when either threshold is exceeded.
A method for monitoring the uniformity of tows with mechanical sensing elements in the course of producing a tow line comprising the steps of transporting a tow at a predetermined speed by a roller arrangement, measuring tow tension upstream of the roller arrangement, detecting any irregularity of tow passing the roller arrangement by detecting tow tension increases and decreases, counting the number of tow increases and decreases over the given length of tow, and utilizing the number of tow increases and decreases over the given length of tow as a measure of tow quality.
Dependencies are inferred from the claim text.