What Is Textile Yarn?
An assemblage of
Classification of Yarn
Yarns may be divided into three types according to their structure as follows:
Staple fiberyarns or Spun yarns (Single yarn):
Spun yarns are made by mechanical assembly and twisting together (spinning) of staple
Single yarns are used in the majority of fabrics for normal textile and clothing applications, but in order to obtain special yarn features, particularly high strength and modulus for technical and industrial applications, ply yarns are often needed. A folded or ply yarn is produced by twisting two or more single yarns together in one operation, and a cabled yarn is formed by twisting together two or more folded yarns or a combination of folded and single yarns. The twisting together of several single yarns increases the tenacity of the yarn by improving the binding in of the ffiberson the outer layers of the component single yarns. Ply yarns are also more regular, smoother and more hard wearing. The direction of twisting is designated as S or Z, just as in single yarns. Normally the folding twist is in the opposite direction to that of the single yarns.
A filament yarn is made from one or more continuous strands called filaments where each component filament runs the whole length of the yarn. Those yarns composed of one filament are called monofilament yarns, and those containing more filaments are known as multifilament yarns. For apparel applications, a multifilament yarn may contain as few as two or three filaments or as many as 50 filaments. In carpeting, for example, a filament yarn could consist of hundreds of filaments. Most manufactured
According to the shape of the filaments in the yarn, filament yarns are classified into two types, flat and bulk. The filaments in a flat yarn lie straight and