The R 37 is Rieter’s latest semi-automated rotor spinning machine and proved itself to be the perfect machine for recycled cotton applications as the trash extraction process can be adapted to the raw material. With this machine, the Rieter customer Longgang Deao Industrial Co. Ltd. based in China has achieved a stable higher production as well as improved yarn tenacity and fewer imperfections.
The new spinning box technology makes the semi-automated rotor machine R 37 unique as it allows for flexible adaption to the raw material. Thanks to the replaceable trash channels, a higher level of trash extraction is achieved. The optimized fiber flow in the spinning box results in higher yarn tenacity and fewer imperfections. The R 37 is designed for high production volumes and is more productive than other semi-automated rotor spinning machines available on the market: With the latest rotor spinning technology and up to 600 highly productive spinning units, the R 37 produces yarn at a delivery speed of up to 200 m/min.
Longgang Deao expands in the recycled cotton yarn market
Longgang Deao Industrial Co., Ltd. is a manufacturer of recycled cotton yarn located in Longgang County, Wenzhou, China. It mainly produces Ne 8 to Ne 16 rotor yarns from recycled cotton and viscose. Due to the competitive market situation, Longgang Deao continuously has to optimize its raw-material costs and improve quality to meet the expectations of downstream customers. The company’s goal is to expand its share in the recycled cotton yarn market and to further strengthen strategic collaboration with established brands. To achieve this, Longgang Deao invested in five Rieter rotor spinning machines R 37 with a total of 2 600 rotors (Figure 1).
20% fewer imperfections in economical blends
At Longgang Deao, the R 37 has shown that it can remove more trash than other machines, all while retaining valuable long fibers in the yarn-production process. This has significant advantages: higher productivity, improved yarn tenacity and a 20% reduction in imperfections, mainly neps (Figure 2). This shows that competitive yarn qualities can be achieved from economical blends with a high proportion of waste or recycled fibers. In addition, the R 37 offers high spinning stability and enables the customer to further improve productivity and yarn quality.