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COMFORJET - A New Yarn with Convincing Properties

03 Dec '11

6 min read

Hermann Buehler AG – one of the first ComforJet® spinners

Hermann Buehler AG with headquarters in Winterthur-Sennhof, Switzerland produces yarns for customers with highest requirements. With innovative products, superior quality and a perfect customer service, the company sets standards. With a constant interest in the latest technology, Hermann Buehler AG was present from the beginning in the development of the Rieter air-jet spinning machine. That is also the reason why Hermann Buehler AG incorporated one of the first Rieter J 20 air-jet spinning machines in its production. Ms Renata Franz, Business Development Manager at Hermann Buehler AG, made the following comments: „Our cotton yarn, spun on the new Rieter J 20 air-jet spinning machine, is the first air-jet spun cotton yarn on the market that can be processed without problems. The good bobbin build-up of the cylindrical bobbins allows perfect operational behaviour on the knitting machine. Due to optimal bonding of the fibers in the yarn structure, the end products from air-jet yarn possess extremely good pilling characteristics. The fiber ends cannot be freed in wear, which maintains a perfect fabric appearance even after numerous washes. Afterr washing, a visibly lower shrinkage is apparent compared to the classic ring yarn. Furthermore, the knits are dimensionally very stable which is especially interesting in the case of seamless knits. The very even fabric appearance and for an air-jet yarn pleasantly soft touch are further typical properties of ComforJet® yarn. Experience also shows that due to the special yarn structure, savings can be made in the amount of sizing agent and color dye required.“

Santoni – ComforJet® cotton yarn with 45 rpm on the knitting machine

Santoni, market leader in seamless knitting machines, also felt the great interest in ComforJet® cotton yarn which was being processed on its latest Atlas HS (high speed) circular knitting machine. The yarn from Hermann Buehler, with a yarn count of Ne 50 (Nm 85), was processed trouble-free, and this at the highest speed. Gianpiero Valsecchi, Head of Sales (Large Diameter Machines) at Santoni: „In particular, the high speed of 45 rpm and the extremely low fiber fly of the ComforJet® cotton yarn, fascinated visitors to our stand. The Buehler air-jet yarn allows maximal productivity at simultaneously reduced machine cleaning expenditure. The knits are convincing thanks to minimal hairiness, an attractive sheen and very low impurities due to bonding of the fiber tufts during knitting. The ComforJet® cotton yarn from Buehler increases the benefit immensely due to the very low fiber fly.“

A further positive influence on the quality of the knits is provided by the knitting technology without sinkers patented by Santoni. This allows knits to be produced without any sinker marks and at the same time, permits a closer stitch and thereby heavier knits. The patented technology leads to higher production speeds with conventional gauges.

Successful cooperation

The ComforJet® yarn aroused very great interest amongst the exhibition visitors. Process stages could be observed in detail, from the machine producer across the yarn producers up to the downstream processing on the knitting machines. For the 3 companies participating, Hermann Buehler AG, Santoni and Rieter, it was in every respect a success. Many valuable discussions and projects were generated.

Rieter Machine Works Ltd