Page 53 - April-May-2017

Nonwovens

when

quality is

super- With developments in synthetic fibers, there was a
USTER® JOSSI MAGIC EYE – Unsurpassed detection
performance with all kinds of plastics

trend about 25 years ago for nonwovens applications
critical… to switch from pure cotton to synthetics. Initially,
consumers preferred the dry and light texture of
USTER® JOSSI VISION SHIELD 2 – Detection and
elimination of natural and synthetic contamination synthetic fibers. In the last decade, however, many
applications are seeing a return to pure cotton as the
favored option, particularly where allergenic issues
such as skin reddening and irritation are possible.
USTER® fiber cleaning systems prevent Uster Technologies acquired Jossi AG in 2013 and
contamination in hygiene and cosmetic applications now applies the USTER® JOSSI VISION SHIELD 2 Manufacturers of nonwovens for these demanding
and USTER® JOSSI VISION SHIELD T systems, end-uses now require an efficient contamination
Yarn spinners already understand the importance of using multiple detection principles to eject all control system, guaranteeing a zero-tolerance
preventing contamination in their products. A total of polypropylene particles, however minute. The finest standard – for defects bigger than 1 mm – in their
3,500 worldwide installations of Jossi fiber cleaning white PP contamination is reliably and efficiently products. In nonwovens, fiber cleaning is the only
systems – now produced by USTER – is proof of that. detected with the USTER® JOSSI MAGIC EYE in way to control contamination – unlike in spinning
The USTER® JOSSI VISION SHIELD solutions are combination with the USTER® JOSSI VISION where yarn clearing can make a final check at the
highly effective at removing even the smallest SHIELD. Practically all types of foreign matter, winding stage. Product quality in nonwovens
contaminants, including polypropylene. For including polypropylene and polyethylene, are therefore depends absolutely on the efficiency of the
nonwovens producers, however, the risk of eliminated by USTER® JOSSI MAGIC EYE, with a fiber cleaning system, which makes investment in the
contamination is possibly even greater: in medical minimum of waste. USTER® JOSSI VISION SHIELD system a logical step.
and hygiene applications, for example, quality
standards are super-critical and zero contamination Special challenges for nonwovens Nonwovens: big in Japan
is essential. producers Most of the machinery for nonwovens hygiene
Compared to yarn spinning, nonwovens products products is made by Japanese companies and
Contaminated yarn is one of the spinner’s biggest and processes bring some special challenges and Japan itself plays a leading role in manufacturing
headaches, potentially leading to customer claims even more demanding requirements. Imagine, for goods for medical and cosmetic applications, as well
and rejects when synthetic particles such as example, a scratchy remnant of polypropylene in a as food packaging materials. “Japan is growing as a
polypropylene (PP) remain undetected in cotton until make-up removal pad…or any kind of contamination market for USTER® fiber cleaning systems, thanks to
the fabric reaches the dyehouse. Today, the range of in hospital products such as absorbent cotton, these nonwovens applications,” says Oswald
USTER® JOSSI systems is proven to deal with this alcohol swabs, or nonwoven gauze. Such problems Baldischwieler, Product Manager Fiber Cleaning
problem with unbeatable effectiveness, detecting and would be totally unacceptable. Not surprisingly, within Uster Technologies. “The combination of
removing foreign matter from cotton at the spinning markets for medical and hygiene products in the USTER® JOSSI VISION SHIELD and USTER® JOSSI
preparation stage. USA, Europe and Asia are extremely quality-oriented. MAGIC EYE supports the manufacturers to control
contamination continuously at a high level.”