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A leading global systems supplier for the production of short staple spinning mills

The global provider of components for all spinning processes

Yarns that follow fashion

Rieter offers attractive positions around the world


Business Model

Around 94 million tons of fiber are processed annually around the world, for example for clothing, technical textiles or household textiles. Fiber consumption is growing with the world population and disposable income, on average at around 2 to 3% per year.

Yarn production

The process from fiber to textile begins with fiber production. A yarn is produced from the fibers, for example from cotton, polyester or viscose. A textile is then produced from the yarn via various processing steps such as weaving, knitting, dyeing or finishing.

Yarn is produced in two basically different ways. On the one hand, this is done by spinning staple fibers. These are fibers with a staple length of 23 to 60 mm (short-staple fibers) or over 60 mm (long-staple fibers). On the other hand, yarn is produced by processing so-called filaments to make continuous filament yarn. The resulting yarns have different properties. In the clothing industry, the yarn produced from staple fiber predominates because it offers pleasant wearing comfort.
Each of the two types of yarn production accounts for around 50% of world fiber consumption. Rieter is engaged in yarn production from staple fibers. The most important of these are cotton (about 24 million tons per year), polyester (about 16 million tons per year) and viscose (about 5 million tons per year).

In the preparation stage, the fibers, which are delivered in bales, are separated, cleaned if necessary, aligned, homogenized and drawn. This is done in three process steps: blowroom/bale opener, carding machine and draw frame. In cotton processing, the combing machine also plays a role: here, short fibers are combed out to produce a higher-quality yarn. At the end of the preparation stage, a uniform sliver has been produced, which is as yet untwisted.

Spinning process

In the end spinning stage, the fiber mesh is further drawn (up to about 40 fibers in cross-section for very fine yarns) and spun into a yarn by twisting. Twisting takes place either by means of a rotating spindle (ring spinning, compact spinning), by rotation of a rotor (rotor spinning) or by an air flow (air-jet spinning). Compact spinning is a variant of ring spinning, in which, by means of an auxiliary device, a more compact yarn with a higher yarn density is achieved due to improved fiber bonding.

After spinning, imperfections are removed from the yarn. The yarn is then wound, in order to present it in a suitable form for the subsequent process steps in the textile production chain.

Measured variables for capacity

The production capacity for producing yarn from staple fibers is measured in spindle equivalents. The production capacity of a ring spindle serves as the basis. The spinning unit of a rotor spinning machine corresponds to the productivity of five to six ring spindles, whereas that of an air-jet spinning machine corresponds to the productivity of 20 ring spindles.

A total of more than 250 million spindle equivalents are used worldwide to produce yarn from 47 million tons of staple fibers, of which around 100 million are in China, 61 million in India, 52 million in South Asia and 12 million in Turkey. Every year, between 11 and 15 million spindle equivalents are installed worldwide: spinning mill owners invest in rationalization, replacement or expansion. In 2016, Rieter delivered 1.83 million spindle equivalents (1.87 million). In addition, they require wear and spare parts for ongoing operation.


The world market for staple fiber machines, which is relevant for Rieter, has an annual volume of CHF 3 200 to 4 000 million. Rieter is the market leader with a market share of around 30%.

Business with new machines, wear and spare parts

The business with new machines is of a highly cyclical nature. The tendency to invest in the spinning industry is mainly influenced by expectations regarding fiber consumption and the margins that can be achieved by selling yarns. Fiber consumption is dependent on the economy, while the margins for yarn depend on the movement of raw material prices, capacity utilization and the production costs of the spinning mills, foreign exchange rates and government policies. The business with wear and spare parts is much less cyclical. The basic business is driven by the degree of capacity utilization of spinning mills – operational spinning mills require wear and spare parts. Project business such as the conversion or modernization of entire spinning mills, on the other hand, are subject to the investment cycle described above.

Product and service offering

Rieter plans spinning mills, develops, produces and supplies the machines for both preparation and end spinning, and supervises the installed machines throughout their life cycle. Rieter with all its brands is established worldwide as a premium supplier. The innovative products and services from Rieter enable spinning mill operators to be more competitive. Success factors are lower yarn costs, as savings can be made on raw materials, energy, labor and depreciation, with the same or better yarn quality, which allows higher prices for the same production costs. The professionalism and availability of the service is also a key aspect when customers decide to buy Rieter products.

Three business groups

The Machines & Systems Business Group develops, produces and distributes new equipment in the spinning systems and single machines sector. Blowroom, carding machines, draw frames and combing machines are used for preparation; ring, compact, rotor and air-jet spinning machines are used for end spinning. The offer is supplemented by planning services as well as material flow and information technology, by means of which the machines are connected to a single system.
The After Sales Business Group develops, produces and distributes spare parts for Rieter machines that do not come into contact with fibers, such as drives, sensors or controllers. After Sales also sells technology components that are not included in the range of products offered by the Components Business Group (see below). After Sales also offers ser- vices that enable Rieter customers to improve the efficiency and effectiveness of their spinning mills.

The Components Business Group develops, produces and distributes technology components for spinning machines. Technology components are parts of the machines that come into contact with the fiber during the process. On the one hand, new machines are equipped with these components; on the other hand, they are subject to wear during operation and must be replaced regularly.

 Rieter Business Model (PDF/English/580 KB)

Source: PCI, ITMF, estimate Rieter