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Z-twist
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S- and Z-twist yarns
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Z-twist

yarn and rope manufacturing
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S- and Z-twist yarns
S- and Z-twist yarns (Left) S- and (right) Z-twist yarns.

In yarn and rope manufacturing, Z-twist refers to a direction of twist where the fibers or yarns spiral upward to the right, resembling the central portion of the letter Z. This is one of two primary directions of twist, the other being S-twist, where the fibers spiral upward to the left. The amount of twist significantly impacts the yarn's appearance and durability; for instance, yarns with more twist are used for smooth-surfaced fabrics, while those with maximum twist create crepe fabrics. This twisting process binds fibers or yarns together to form a continuous strand, essential for creating fabrics, twines, cords, and ropes.123

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3 Britannica Sources
  1. twisting
  2. textile - Modern spinning
  3. rope

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