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10 Rieter . LINK 52 . 1 /2008 PRODUCT NEWS Fig. 3 Superior quality due to the compact Rieter drafting system. Fig. 4 Good accessibility facilitates operating and maintenance tasks. task without additional mechanisms or drives. A thin place induced between the drafting system and the doffing calender is transported until it is under the turntable, where it breaks when can change occurs. The patented sliver separation function is standard equipment on the machine. Quality with CLEANcoil turntable At high delivery speeds the coiler is of crucial importance for quality. This is where the mill-proven CLEANcoil turntable comes into its own. CLEANcoil’s patented sliver channel geometry ensures coiling free of incorrect drafts. Due to the special honey- comb structure on the underside of the turntable, the cleaning cycle is up to seven days, even with critical types of manmade fiber. Innovative sliver feeder for large-format supply cans A driven cylinder feeder is standard equipment on the SB-D 11. As is the case on the (R)SB-D 40, a sliver feeder designed precisely for this application is used for cans 1 000 mm in diameter. An additional guide ring over the center of the can guarantees centered take-off of the slivers without incorrect drafts and malfunctions, to the very last meter. This keeps efficiency high and prevents sliver residues in the cans. Benefits of large-format delivery cans Double-head drawframes of Asian design can only fill cans no more than 500 mm or in some cases 600 mm in diameter. The SB-D 11 enables cans 1 000 mm in diameter and 1 500 mm high to be used. This means up to 200 000 fewer can movements and sliver piecings per year and SB-D 11, and thus corresponding benefits in terms of operator effort and quality. Large can formats and capacities are also important at the next process stage, e.g. in combing preparation. Production efficiency of the OMEGAlap is therefore up to 8% higher when cans 1 000 mm instead of 500 mm in diameter are used. High flexibility The same top rollers and turntables are used on the SB-D 11 as on the (R)SB-D 40. This increases flexibility and reduces inventory costs. A striking feature of the SB-D 11 due to its compact design is its good accessibility. This enables operating, adjusting and maintenance tasks to be performed easily and quickly (Fig. 4). The machine can also be assembled and commissioned very quickly. 8-106 • Jürgen Müller Head Product Management Drawframe Rieter Ingolstadt GmbH Ingolstadt juergen.mueller@rieter.com
Large product diversity with ComfoRo® rotor-spun yarns Rotor spinning is a very flexible spinning process in terms of potential yarn counts and fiber materials. The Rieter R 40 rotor spinning machine effortlessly produces yarn counts of Ne 3 to Ne 60 economically from cotton, viscose or man-made raw material. Fig. 1 The manufacture of highquality products from rotor-spun yarn can be optimized further with the R 40 and ComfoRo®. A wide range of technology components is available for adaptation to different applications: rotors from 26 mm to 57 mm in diameter, with widely differing rotor groove designs; different draw-off nozzles for influencing hairiness, yarn characteristics or tenacity widen the range of possibilities; different types of opening rollers for different materials and their blends as well as for fancy yarn effects round off the flexible overall package. Various TWISTstop elements are also available for influencing spinning stability. This ensures the necessary spinning stability for knitting yarns even with minimal twist rates. Rieter . LINK 52 . 1 /2008 PRODUCT NEWS Ideal for the end use Yarns produced on the R 40 rotor spinning machine with yarn-like piecings offer a quality standard that generates benefits right through to the end product. ComfoRo® yarns can be spun optimally for the intended end use. Yarn tenacity itself is high, with minimal fluctuations. Faults in subsequent processes are especially rare. The productivity of the subsequent process stages is therefore higher, and operating personnel can supervise more machines. Textile fabrics made from ComfoRo® rotor-spun yarn have fewer defects than other yarns, a uniform surface and an attractive hand. High productivity with all yarn counts and raw materials The strength of rotor spinning when processing short or unequally long fibers comes especially into its own with cotton. The technologically advanced R 40 with its SC-R spinning box produces superior yarn quality and ideal yarn characteristics. The applications of the R 40 rotor spinning machine range from coarse denim yarn in counts of Ne 5 to Ne 12, through yarns for terry towels in counts of Ne 12 to Ne 16, knitting yarns for leisurewear and sportswear in counts of Ne 18 to Ne 24, to fine count knitting yarns of Ne 30 and finer. Denim yarns The R 40 is highly productive for denim yarns: both vertically integrated plants and contract spinning mills currently produce Ne 10 yarns at delivery speeds of over 230 m/min. TC rotors featuring a rotor groove developed especially for denim ensure even yarns at high delivery speeds. These yarns, with a low snarling tendency, run ideally in downstream processing, such as hank dyeing. Especially the critical opening of the hank after dyeing is then easy and causes no stoppages. Terry Various requirements are fulfilled for terry toweling: the ground warp must display low hairiness and high tenacity, since it is especially subject to stress. Due to the outstanding quality of their piecings and consistently high yarn tenacity, yarns produced on the R 40 can certainly replace yarns produced on ring spinning machines, in some cases even doubled ring-spun yarn. 11
Page 1 and 2: The customer magazine of Rieter Spu
Page 3 and 4: It has become clearly apparent in r
Page 5 and 6: Fig. 2 Fiber cross-section structur
Page 7 and 8: Fig. 4 Maximum work load vs. rotor
Page 9: The new SB-D 11 compact drawframe T
Page 13 and 14: Fig. 3 AEROpiecing® technology on
Page 15 and 16: Fig. 3 Spinning rings of up to 54 m
Page 17 and 18: Enhanced user-friendliness with ori
Page 19 and 20: Rieter’s 80 years in China Rieter
Page 21 and 22: Fig. 3 In addition to building fact
Page 23 and 24: Fig. 2 The C 60 card was on show

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