Guaranteed quality in nonwovens
Medical, personal care and hygiene are highly-sensitive applications for nonwoven fabrics. Quality standards are strict – for both fabric appearance and for comfort in contact with human skin – so it is critical that spunlace producers take control of contamination.
The USTER® JOSSI VISION SHIELD provides the required control and assurance, by identifying and eliminating all foreign matter contamination from the loose fiber raw material, at the earliest stage of production, before fabric formation. This is the ideal point for fully-automatic detection, ensuring the highest efficiency in both controlling contamination and optimizing production.
Why waste good fiber?
Some waste is unavoidable, if foreign matter is to be removed from bleached cotton and man-made fibers. But it is important to keep this to a minimum, to preserve the expensive ‘good’ fiber. The USTER® JOSSI VISION SHIELD has the technology to manage this, by precise measurement of the speed of the fiber tufts passing through the system. Highly-accurate valves then enable the ejection of contaminants to be perfectly synchronized, so that a minimum of ‘good’ fiber is taken out with the foreign matter particles.
Top technology is the solution
Conventional camera systems are limited in their detection scope – while USTER® JOSSI VISION SHIELD applies the very best imaging spectroscope technology to detect over a far greater wavelength. That means, for example, that it has the power to pick out a polypropylene fragment as fine as a single human hair. The technology can identify various types of polypropylene and other synthetics.
Automatic detection at the right stage of production
USTER® JOSSI VISION SHIELD is ideally located in the blowroom, just after the fine opener. Positioned here, it avoids the risk of small particles of contaminant being hidden within larger tufts. This would otherwise increase both the difficulty and cost of subsequent removal. The system’s combination of fully-automatic detection and removal ensures the best and most efficient fiber cleaning performance.
USTER® JOSSI VISION SHIELD 2 - detection and elimination of natural and synthetic contamination