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Rieter: Easy Processing of Dusty Linen-Viscose Blend

Fig. 1: Dusty material like linen fibers present a challenge in spinning mills..

Easy Processing of Dusty LinenViscose Blend

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The highly efficient suction system of the draw frame SB-D 50 enables the processing of dusty material like linen fibers. At Rieter customers the singlehead draw frame without autoleveler runs at a delivery speed of up to 800 m/min with a blend of linen and viscose.

The popularity of linen has increased in recent years, especially for clothing. Linen is very breathable and dries faster than cotton, making it comfortable to wear even in hot weather. However, a major challenge for spinners is that linen fibers have a high trash content and tend to generate wood dust during processing (Fig. 1), especially on the first draw frame passage.

This can lead to deposits on machine parts, particularly at higher speeds. These deposits cause tedious cleaning work for the operator in the drafting and coiling area and, if delayed, can lower machine performance.

Draw frame SB-D 50 with efficient suction system

The single-head draw frame SB-D 50 without autoleveler offers the greatest flexibility (Fig. 2). It is designed for cotton and man-made fibers but is also perfectly suited to process special fibers like linen with high productivity.

For easy processing of dirty and dusty material, the SB-D 50 is equipped with a highly efficient suction system. The cleaning lips are lifted regularly so that trash accumulations end up directly in the suction.

The automatic filter cleaning system keeps the filter screen clean with the help of a wiper. The operator can set the suction intensity easily and quickly on the machine display. Four suction slots in the infeed of the drafting unit enable a 24hour operation. The efficient suction system at the pre-draw frame reduces dust during coiling and keeps the production efficiency in the subsequent processes at a high level.

High productivity, easy handling and 13% energy savings

Customers are very satisfied with the operation and productivity of the SB-D 50 at high speed. The draw frame runs smoothly and trouble-free with a blend of linen and viscose (55/45%) at 800 m/min. The easy accessibility for maintenance work and the central lubrication point also make working with the SB-D 50 convenient for the operator. Six machines can be easily handled by one operator.

In addition, the workload at the next draw frame and at the roving frame is reduced due to fewer stoppages and sliver breaks. The excellent operation of the SB-D 50 thus ensures consistent sliver quality with high productivity and best yarn quality in downstream processes. Thanks to the patented drive concept ECOrized with fewer drive elements, the SB-D 50 saves energy even at higher delivery speeds. The frequency-controlled drive for the suction and the individual drive for the coiler are unique. As a result, customers benefit from around 13% energy savings compared to the competitor machine (Fig 3).

About Rieter

Rieter is the world’s leading supplier of systems for short-staple fiber spinning. Based in Winterthur (Switzerland), the company develops and manufactures machinery, systems and components used to convert natural and man-made fibers and their blends into yarns. Rieter is the only supplier worldwide to cover both spinning preparation processes and all four end-spinning processes currently established on the market. Furthermore, Rieter is a leader in the field of precision winding machines. With 17 manufacturing locations in ten countries, the company employs a global workforce of some 4 900, about 18% of whom are

based in Switzerland. Rieter is listed on

the SIX Swiss Exchange under ticker symbol RIEN.

Fig. 3: Customers save around 13% energy, thanks to the innovative machine concept.

Fig. 2. The single-head draw frame SB-D 50 processes cotton, man-made fibers and also special fibers like linen with high productivity.

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