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COMFORJET - A New Yarn with Convincing Properties

03 Dec '11

6 min read

ComforJet® is the brand name of yarn spun on the new Rieter air-jet spinning machine. In close cooperation with representatives of three process stages, the spinning machine manufacturer Rieter AG, the spinning company Hermann Bühler AG and the knitting machine manufacturer Santoni, the yarn properties and thereby the behavior in downstream processing could be optimized. End products made from ComforJet® yarn exhibit excellent wear and tear characteristics. These were convincingly demonstrated to visitors at the ITMA on the various booths.

What is ComforJet®?

ComforJet® is the brand name for the yarn spun on the Rieter air-jet spinning machine. The air-jet spun yarn exhibits a completely new yarn structure. Typical features are the very low hairiness, the smooth yarn surface and the associated soft and voluminous yarn character. How does the spinning principle work? The air-spinning machine is fed with slivers. The sliver is specifically drafted and fed to a spinning nozzle. By means of an air stream, the outer fibers are twisted around the inner yarn core.

The ComforJet® yarn brings many advantages, not only in downstream processing but also in the end product and opens up new areas of application.

Rieter yarn testing reaches into downstream processing

With new developments, the Rieter test phase does not end with the yarn but in the downstream processing. Consequently, the findings from the further yarn processing also flow into the machine development. This was also the case in the development of the air-jet spinning machine. For instance, a project was carried out with the Italian knitting machine manufacturer Santoni during which the idea arose to use the ComforJet® cotton yarn from Hermann Buehler AG on the latest Atlas circular knitting machine from Santoni at the ITMA in Barcelona.

ComforJet® yarn on 4 stands at the ITMA

At the ITMA in Barcelona on the Rieter stand in hall 1, the new J20 air-jet spinning machine was presented to the public for the first time. Visitors followed with great interest the production of 2 different yarns on the J 20, a Viscose yarn Ne 30 (Nm 50) on one side of the machine, a cotton yarn Ne 50 (Nm 85) on the other side of the machine. In Hall 3 on the Santoni stand, such a ComforJet®cotton yarn from Hermann Buehler AG was knitted on the Atlas circular knitting machine. The exhibition visitors could thereby be personally convinced of the advantages of the new yarn that was processed almost dust-free. In the new fiber and yarn section in Hall 4, the spinning company Hermann Buehler AG also showed ComforJet® yarns from its production range. Also Rieter was represented in Hall 4 with a second stand. As the only supplier of all 4 spinning technologies, Rieter exhibited the 4 different yarns: ring yarn, Com4® compact yarn, ComfoRo® rotor yarn and the ComforJet® air-jet spun yarn as well as their end products. Many interested visitors took the opportunity to discover these 4 yarns as well as their typical end applications and to compare them with each other. The new ComforJet® yarn and its benefits in downstream processing and in the end product was here the center of interest.