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Uster's technology mix offers auto contamination detection
Jul '14
Cleaner cotton makes quality yarns – but how can spinners be sure of removing unwanted contaminants without wasting good fiber or hampering mill productivity? The acquisition of Jossi Systems AG by Uster Technologies has created the ‘Total Contamination Control’ concept. This combination of USTER JOSSI VISION SHIELD and USTER QUANTUM 3 offers spinners the highest level of foreign matter detection, together with lowest possible waste. 
When it comes to contamination in raw cotton, there are wide variations in how spinners need to react. Some of their yarn customers will demand a zero tolerance approach – for challenging end-uses such as white shirts – while others will not be so concerned, especially if they are serving less critical applications. But every spinner will recognize the need to avoid the risk of rejects and customer claims, by ensuring that all really disturbing faults are eradicated. Tailoring their yarns to precise quality specifications is the safest way to achieve this.
For the most ‘contamination-sensitive’ customers, spinners face some serious choices. They could try to source only contamination-free cotton, or attempt to locate and eradicate foreign matter manually, at the opening stage. However, neither of these options is really practical or reliable.
In fact, automatic detection and removal of contamination offers the only effective solution – even better if a doubly-secure method can control unwanted material at both the start and end of the yarn production sequence. USTER offers exactly this, combining two leading-edge technologies in Total Contamination Control. First, the USTER JOSSI VISION SHIELD, located immediately after the fine cleaner in the blowroom, takes out contaminants during the preparation stage. 
Then, after spinning, the USTER QUANTUM 3 yarn clearers operate during winding to fine-tune contamination removal to meet the customer’s quality requirements. Total Contamination Control allows spinners to meet precise yarn specifications, while also managing the mill’s own productivity goals.
Spinners in the driving seat
Sophisticated technologies behind contamination detection systems in fiber preparation and yarn clearing can handle all kind of foreign matter – natural and synthetic. Even white polypropylene (PP) is no problem for the USTER JOSSI VISION SHIELD and the USTER QUANTUM 3. The combination of these two systems guarantees the maximum contamination detection rate.

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