Web Exclusive | November 2019
Uster to give info on latest fibre cleaning systems
At upcoming Techtextil India 2019 event, Uster will give information on latest fibre cleaning systems for applications ranging from sensitive (medical & hygiene) to delicate (security paper printing). Uster Jossi Vision Shield detects and eliminates tiniest particles of contaminant preventing potentially disastrous quality claims and rejections by customers.
Operating in the preparatory stages before spunlacing, the 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 fibre 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 colours is pinpointed, even in IR and UV light ranges.
The process of detecting and removing contamination from bleached cotton and man-made fibres inevitably generates some waste. It is important to ensure a minimum of good fibre is lost in this way. Uster Jossi Vision Shield achieves this by continuously measuring the velocity of the fibre 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.
For fibre 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 fibre cleaning system integrate perfectly in the production line.