Rieter Com4® Yarns Yarns of Choice Iris Biermann Rieter Machines&Systems Anja Knick Rieter Machines&Systems Rieter Com4® Yarns Yarns of Choice

Rieter . Rieter Com4® Yarns 1 What is ComA® yarn? 1.1 Rieter Com4® yarns - yarns of choice 3 1.2 Diversity results in flexibility and creativity 5 1.3 Which yarn is recommended for which application? 5 2 Different views on a ComA® yarn 2.1 Main characteristics of each Com4® yarn 6 2.2 Com4® yarns compared to each other 11 2.3 Com4® yarns compared to competitor yarns 14 3 ComA® yarn in practice 3.1 Yarn count range 16 3.4 Competent advice for the complete spinning process 19 A All about the ComA® licence 4.1 Advantages in using the Com4® brand 20 4.2 The path to your licence 20 4.3 The Com4® yarn...

Rieter . Rieter Com4® Yarns Rieter Com4® yarns – Yarns of choice Com4® (pronounced: comfor) yarns are yarns that fulfil the most exacting requirements and ensure competitiveness in a dynamic market. The benefits of the Com4® yarns are visible in spinning, in downstream processing and in the final product, e.g. from high processing speeds, less fibre fly and low size pick-up through to excellent pilling values, reduced spirality tendency and high wearing comfort. Com4® yarns are spun on Rieter end spinning machines. Thanks to mature technologies, yarn production in Rieter ring, compact, rotor...

Rieter . Rieter Com4® Yarns The family of Com4® yarns consists of (Fig. 1): Com4®ring – ring-spun yarn, Com4®compact – compacted ring-spun yarn, Com4®rotor – rotor-spun yarn, Com4®jet – air-jet-spun yarn. Com4® is a worldwide registered Rieter trademark. As well as Rieter customers who wish to have their yarns licensed, downstream processors can also have their textile fabrics licensed which are verifiably manufactured from Com4® yarn. – ring-spun yarn – compacted ring-spun yarn – rotor-spun yarn

Rieter . Rieter Com4® Yarns Diversity results in flexibility and creativity Creativity has no limits in the textile industry. In order to produce innovative textile surfaces, varied yarns are needed. To bring special designs or functions into the fabric, textile designers require a vast selection of yarn types. In addition to the yarn structure variants such as the yarn count, volume and the raw material in use, options are necessary to provide designers with a large yarn variety (Fig. 2). The 4 end spinning systems can produce additional yarn variants by adaptation of special facilities. For...

Rieter . Rieter Com4® Yarns Different Views on a Com4® Yarn For the successful textile manufacturer it is absolutely relevant which characteristics the yarns provide (Fig. 3). In order to describe the differences between the Com4® yarns themselves or to compare them to competitor yarns, individual consideration must be given to each aspect. Each Com4® yarn has its own properties – not in comparison to other yarns but rather for what the respective Com4® yarns stand. The comparison of the properties is decisive in the selection of the most suitable Com4® yarn for the respective textile application....

Rieter . Rieter Com4® Yarns Most flexible in raw material, count, characteristics Highest tenacity High optical evenness High tenacity Even yarn structure High volume High hairiness Designable hairiness Low tendency for staff (fibre fly) High yarn density High abrasion resistance High abrasion resistance Highest volume Fig. 4 Each yarn has unique properties A look at the yarn properties points out the substantial differences of the 4 yarns (Fig. 4). Com4®ring is characterised by high flexibility in the use of the raw material, the yarn count and the yarn character. It possesses a high degree...

Rieter . Rieter Com4® Yarns Com4®ring basically exhibits good properties in downstream processing. This results in good efficiency and high process speeds, mainly because of the constant yarn quality. Of special note is the benefit with weft insertion on the air-jet weaving machines. Due to the comparably high hairiness, the yarn can be safely transported by the air through the weaving shed. Com4®compact shows great advantages in relation to the process respectively processing speed. The high yarn strength makes the yarn substantially more resistant to the subsequent processes. Low ends down...

Rieter . Rieter Com4® Yarns 2.1.3 Com4® in the fabric Here too, the yarn structure is what shapes the fabric characteristics (Fig. 6). Fabrics from Com4®ring yarns show predominantly good properties. Especially the opacity in knits due to the high yarn hairiness can be named as a benefit. But also the extremely soft touch of the fabric should be mentioned. Basically, a ring yarn enjoys the greatest acceptance by users – by the fact of its long history. Com4®compact has the highest fabric strength. The absolutely clear defined structures with printed products, Jacquard and shaft patterns are immediately...

Rieter . Rieter Com4® Yarns 2.1.4 Com4® in final products The yarn characteristics determine the preferred areas of application of the Com4® yarns (Fig. 7). Com4®ring has the most universal area of application. This is mainly in the outerwear and underwear sector but also in the range of home textiles. In terry articles, ring yarns with their typical yarn strength support the sub-structure. The absolute domain of Com4®compact is the fine shirting sector. In addition, high-quality knitted products and superior bed linen produced with fine yarn counts are typical applications. A further field in...

Rieter . Rieter Com4® Yarns 2.2 Com4® yarns compared to each other Also when comparing the yarns to each other, the differences in yarn characteristics, properties in downstream processing and the appearance of the end product are important. The following descriptions are general rules and attempt to show the differences in relation to all the raw materials and yarn counts. According to the raw material used and the yarn count, shifts in comparison to the yarn are possible. However, in general the statements made are valid. Basically the tables should be read as follows: the more plus signs,...