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For instance, in a cotton polyester core-spun yarn, cotton wraps around a polyester filament yarn. Similarly, core-spun cotton spandex is a yarn in which cotton fibers are twisted around a spandex yarn and covers the core yarn and are primarily used in denim types. Plying two or more core-spun yarns are used for making core-spun threads.
Thread is similar to yarn, cord, twine, or string, and there is some overlap between the way these terms are used. However, thread is most often used to mean materials fine and smooth enough for sewing, embroidery, weaving, or making lace or net. Yarn is often used to mean a thicker and softer material, suitable for knitting and crochet.
Texturized yarns are made by a process of air texturizing filament yarns (sometimes referred to as taslanizing), which combines multiple filament yarns into a yarn with some of the characteristics of spun yarns. They are synthetic continuous filaments that are modified to impart special texture and appearance.
The term, blend, refers to spun fibers or a fabric composed of such fibers. [1] [3] There are several synonymous terms: a combination yarn is made up of two strands of different fibers twisted together to form a ply; [1] a mixture or mixed cloth refers to blended cloths in which different types of yarns are used in warp and weft sides. [4] [5]
Textile fibers, threads, yarns and fabrics are measured in a multiplicity of units.. A fiber, a single filament of natural material, such as cotton, linen or wool, or artificial material such as nylon, polyester, metal or mineral fiber, or human-made cellulosic fibre like viscose, Modal, Lyocell or other rayon fiber is measured in terms of linear mass density, the weight of a given length of ...
Filling or weft yarns usually have fewer twists per inch because strength is not as important as with warp yarns, and highly twisted yarns are, in general, stronger. Warp yarns have to be stronger so that they can withstand the tension of the loom. Filament fibers, such as silk, or many synthetics, need only be twisted slightly to create a yarn.
The former, with a number of filaments of around 275, can be converted into a filament yarn by adding twist to the bundle. Bundles with several thousands of fibers are typically used to convert fibers into spun yarn. That can be done by stretch breaking and subsequent traditional yarn spinning technologies. This results in 100% metal yarns.
If the fibers are first aligned by combing them, the yarn is smoother and called a worsted; by contrast, if the fibers are carded but not combed, the yarn is fuzzier and called woolen-spun. The fibers making up a yarn may be continuous filament fibers such as silk and many synthetics, or they may be staples (fibers of an average length ...