USTER®, the choice of fiber, yarn and fabric manufacturers, uses the JOSSI VISION SHIELD technology to eliminate contaminants that may form in production.
Why USTER® fiber cleaning is the best choice for super-critical applications? Some sweet-toothed individuals might dream of a room full of candy floss. The fairground treat certainly has its appeal… but what if you had to find an object as thin as a one cent coin hidden inside the sugary mass? A sticky problem, for sure. Now, let’s imagine we are dealing with tufts of man-made fiber instead, the kind used as feedstock for spunlaced nonwovens. This is when things get serious: the most critical medical and hygiene applications for these products demand zero-tolerance of any contamination fragments larger than 1 mm. Still a big task, yet the USTER® JOSSI fiber cleaning system has the solution, finding and ejecting unwanted substances in the blink of an eye.
Operating in the preparatory stages before spunlacing, USTER® JOSSI VISION SHIELD reliably detects and eliminates the tiniest particles of contaminant, preventing potentially disastrous quality claims and rejections by customers – often big-name corporations delivering to both institutional and consumer markets.
At the forthcoming Techtextil India 2019 event, experts at the USTER booth will provide detailed information on the latest fiber cleaning systems, for applications ranging from sensitive (medical and hygiene) to delicate (security paper printing).
Fast and efficient contamination control
USTER® JOSSI VISION SHIELD deploys the imaging spectroscope technology, identifying contamination in a fraction of a second, and just as quickly removing it from the mass of good fiber material. Detection works across a much greater wavelength than conventional camera systems, so that contamination as small as a single hair and in the lightest colors is pinpointed, even in IR and UV light ranges.
The process of detecting and removing contamination from bleached cotton and man-made fibers inevitably generates some waste. It is important to ensure a minimum of good fiber is lost in this way. USTER® JOSSI VISION SHIELD achieves this by continuously measuring the velocity of the fiber tufts. Precision valves then match the timing and duration of each ejection of contamination, so that only the required amount of unwanted material is removed.
Meeting the ultimate quality standards
For fiber cleaning, tuft size is the key: small contaminant particles can hide inside denser tufts, especially difficult to locate when the material is more compressed. USTER® JOSSI VISION SHIELD is ideally positioned to overcome this, directly behind the fine opener in the blowroom. These short channels ensure that the tufts pass the spectroscopes in their most open state. This position also means that the optimal dimensions and compact design of the fiber cleaning system integrate perfectly in the production line.
