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In spinning, the fibers are twisted so that the yarn resists breaking under tension; the twisting may be done in either direction, resulting in a Z-twist or S-twist yarn. 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 ...
Diagram showing S and Z twist. There are two common ways to ply a balanced yarn: regular and chain plying. Both methods involve the manipulation of "singles"—unplied strands on their own—into multiple-ply yarns by applying twist in the opposite direction than how the single was spun. For example, if in spinning the single the wheel was spinning clockwise (called a "Z" twist, as on any ...
Yarn over (yo) Dip stitch which can be either A raised increase, knitting into row below (k-b, k 1 b) A lifted increase, knitting into the yarn between the stitches (inc, m1) Knit front and back (kfb) Purl front and back (, pass slipped stitch over (S1, K1, PSSO) for a left-leaning decrease.
S-twist and Z-twist yarns. The direction in which the yarn is spun is called twist. Yarns are characterized as S-twist or Z-twist according to the direction of spinning (see diagram). Tightness of twist is measured in TPI (twists per inch or turns per inch). [11] Two or more spun yarns may be twisted together or plied to form a thicker yarn.
Spinning is a twisting technique to form yarn from fibers.The fiber intended is drawn out, twisted, and wound onto a bobbin.A few popular fibers that are spun into yarn other than cotton, which is the most popular, are viscose (the most common form of rayon), animal fibers such as wool, and synthetic polyester. [1]
For a single ply yarn, the direction of the final twist is the same as its original twist. The twist direction of yarn can affect the final properties of the fabric, and combined use of the two twist directions can nullify skewing in knitted fabric. [20] The mechanical integrity of yarn is derived from frictional contacts between its composing ...
The amount of twist in a yarn helps to define the style of yarn – a yarn with a lot of air such as a woollen-spun yarn will have much less twist than a yarn with little air such as a worsted-spun yarn. The amount of twist also affects the yarn in terms of stretchiness, strength, halo, and many other attributes.
Short draw is the spinning technique used to create worsted yarns. It is spun from combed roving, sliver or wool top – anything with the fibers all lined up parallel to the yarn. It is generally spun from long stapled fibers. Short draw spun yarns are smooth, strong, sturdy yarns, and dense. [1] Short