Spinning Lab

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The Rieter Short Staple Yarn Laboratory is designed to help meet the needs of the textile industry in applied
research. State-of-the-art machinery converts fibers less than 65 mm into spun yarn. Spinning capability includes
ring, compact, open-end, and air-jet spinning. Services range from evaluating the processability of various fibers
and blends to running trials for optimum machine settings and speeds.

Preparation of Sliver

Rieter Unifloc A1/2 – Plucks fibers from top of bales; part of the opening and blending process

Rieter Monocylinder Cleaner B4/1 – Course opener and cleaner

Rieter Mixing Opener Mini Mix B3/3R – Opens, clean, and blends fiber

Fiber Control Feeders – Blends fibers together

Rieter ERM B5 forward slash 5 — Rieter ERM B5/5 – Fine opener and cleaner

Rieter Unimix B7/3 – 6 cell mixing opener

Rieter Card C4 (Synthetic) – Individualizes fiber tufts and transforms individual fibers into sliver

Rieter Card C4 – Individualizes fiber tufts and transforms individual fibers into sliver

Rieter Drawframe RSB 851 – Straightens fibers for parallel orientation

Rieter Unilap E 5/3 – Rolls multiple ends of sliver onto lap as feed package for comber

Rieter Comber E7 forward slash 6 — Rieter Comber E7/6 – Removes short fibers from cotton, commonly referred to as noil waste

Ring Spinning

Rieter Roving Frame F 4/1 – Converts sliver to roving; necessary step for ring spinning

Open-End Spinning

Rieter R20 Rotor Spinner — Rieter R20 Rotor Spinning – Forms yarn in the rotor groove

Air-Jet Spinning

Backwinding

SSM Precision Winder – Uses cones, packages, and bobbins for back winding

Twisting

Volkman VTS-07-T Twister — Volkmann VTS-07-T Twister – Creates plied yarn

Meadows Ring Twister – Creates plied yarn

Frequently Asked Questions…

Ring Spinning creates yarn from short staple fibers through twist. All fibers run parallel along the length of the yarn (this is achieved through either the drawing, combing, or carding process). The ring spinning machine is fed with an extra-twisted sliver called “roving.” This roving is drafted through rollers and twisted around a ring onto a bobbin at high speeds to form yarn.

Ring spinning produces high-quality yarn commonly used in apparel applications. It can also be found in upholstery and drapery.

Open-ended spinning creates a yarn composed of fibers held together by twist or wrapper fibers. These yarns unfortunately do not have the high level of fiber alignment found in ring spun yarns. However, open-ended spinning is an excellent and efficient process for producing thicker yarns with a more uniform diameter.

Open-ended yarns are often used to create denim, sweatshirts, terry cloth, t-shirts, and bedding.

Air-jet spun yarns have a core of straight fibers held together by a shell of twisted fibers. Some properties of the yarn include higher uniformity and less hairiness compared to that of ring spun. However, air-jet yarns are not as strong as ring spun.

Air-jet is the preferred spinning method for fabrics in applications such as sheets or pillow cases.