After the successful launch of its AirJet spun yarns, Swiss cotton spinner Hermann Bühler AG is to further increase its production capacity in the technology and will install another AirJet spinning machine from Rieter in its mill this month.

The expansion will double the number of AirJet spindles and the additional capacity will allow the company to supply further customers, to make new yarn developments and to improve its flexibility.

Bühler says its previous experience confirms that airjet-spun yarns have excellent pilling behaviour due to ‘perfect fibre embedding’ into the yarn structure.

The company says it can also produce soft comfortable AirJet yarns using its ComforJet technology from Rieter and circular knitted fabrics have minimum skew due to the almost non-existent yarn-torsion. Bühler can also offer S-twisted yarns if needed.

As fibre fly is minimized using ComforJet technology, the frequency of machine cleaning can be reduced and fibre fly knitted into the fabric is largely avoided. AirJet yarns are also said to contain considerably fewer yarn connections, a positive yarn characteristic which can improve productivity in further processing.

The expansion of production capacity will allow Bühler to add airjet-spun cotton yarns into its product range, which was a priority for the company since the first AirJet installation. In Micro Modal Bühler offers yarn counts from Ne 30 up to Ne 60 (Nm 50 – Nm 100).

Air-jet is a new spinning technology featured in Rieter’s ComforJet machine. Especially for items made from Micro Modal, air-jet yarns are said to reduce pilling considerably and provide economic benefits in further processing.

In the air-jet spinning process, the fibre ends are said to be embedded well into the yarn structure, which results in a very low yarn hairiness. The fact that the fibres are spun very firmly into the yarn is said to be a crucial factor since it results in excellent pilling values and improved abrasion resistance.

“We are convinced that the Rieter air-jet yarns are particularly suitable for knitted fabrics. The fabric keeps its excellent appearance also after multiple washings. Due to the yarn structure, the pilling typical for Micro Modal can be reduced significantly. Expensive fabric finishes required for pilling control can be avoided. The hard touch, which has been known for air-jet yarns, has been extremely improved by Rieter. Therefore, air-jet yarns are a top quality and cost effective option,” Bühler says.