Spinning (textiles)

• 1. Introduction

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  Spinning (textiles) is one of humanity's oldest technologies. Around 50,000-40,000 BCE, in what is now southern France, someone twisted together strands of fiber. That object, the oldest known twisted fiber on Earth, survived long enough for archaeologists to find and date it. The person who made it could not have imagined that this simple act of twisting would one day power an Industrial Revolution, reshape entire economies, and concentrate wealth and labor in a way that remade the world.

  How does a twist of fiber become a thread? How did a stick and a lump of clay evolve into machines that ran on water and churned out yarn by the kilometer? And why did a technique practiced by women and children in medieval cottages eventually move to the mills of West Yorkshire, and then across the world to Asia? Those are the questions this documentary follows.

• 2. The Physics of Twist

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  Yarn comes into being through three simultaneous actions: drawing out fiber, twisting it, and winding the result onto a bobbin. Each step depends on the others. Pull without twisting and the fiber simply falls apart. Twist without drawing and you get a lumpy, uneven strand.

  In ring spinning, which is one of the most common methods in the world today, the yarn passes from drafting rollers through a thread-guide and around a traveller that rotates freely on a ring. That traveller is dragged by the loop of yarn itself. The spindle turns faster than the traveller, and that difference in speed is what inserts the twist. For every revolution of the traveller, one turn of twist enters the loop of yarn between the roller nip and the traveller.

  The drafting rollers never stop feeding new fiber, so the traveller always spins a little slower than the spindle. This gap allows the twisted yarn to wind onto the bobbin at exactly the rate at which new yarn is being made. The number of turns of twist in the loop stays constant. The whole system is a kind of mechanical equilibrium, elegant in its simplicity.

  Fiber length shapes which path a batch of fiber will take through a mill. Short-staple yarn, typically spun from fibers 0.75 to 2.0 inches long, travels through blending, opening, carding, pin-drafting, and roving before it reaches the spinning frame. Long-staple synthetic fiber may start with a stretch-break of tow, a continuous rope of synthetic material. Open-end and air-jet spinning skip the roving step entirely.

• 3. Natural and Artificial Fibers

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  Cotton is the most popular fiber spun into yarn. Beyond cotton, spinners work with viscose (the most common form of rayon), wool and other animal fibers, and synthetic polyester. Each material has a different origin story and a different path to the spindle.

  Natural fibers divide into three categories: animals, minerals, and plants. Animal sources include sheep, goat, rabbit, and silkworm. Mineral fibers include asbestos, gold, and silver. Plant fibers come from the seed (cotton), the stem (bast fibers such as flax, hemp, and jute), or the leaf (sisal). With the exception of silk, natural fibers are short, only centimeters in length. Each has a rough surface that lets it bond with neighboring staples, which is what makes twisting them together possible at all.

  Artificial fibers work on a completely different principle. A polymer is forced through a device called a spinneret into a medium where it hardens. Wet spinning uses a coagulating medium and produces rayon. Dry spinning, used for acetate and triacetate, dissolves the polymer in a solvent that simply evaporates in a heated exit chamber. Melt spinning, used for nylons and polyesters, cools the extruded polymer in gas or air until it sets. The resulting fibers can run for kilometers without a break. Artificial fibers can also be chopped into short lengths and processed just like natural staple fibers.

• 4. From Spindle to Wheel

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  People are thought to have started by rolling fibers up their thigh or between their fingers. A stick came next, to hold the tension and keep the twist from unraveling. Then someone added a weight to the stick. Often made of stone, wood, or clay, this weight is called a whorl. It kept the stick spinning longer without effort, which left the hands free to draft more fiber. Whorl spindles remain the dominant spinning method in some parts of the world today.

  The spinning wheel arrived later. Starting in the 500s AD it spread across Asia and Europe and became the standard tool for hand spinning. In medieval Europe, hand spinning was a significant cottage industry. Wool spinners, most often women and children, produced yarn for the men who operated looms, or sold it into the putting-out system, where merchants distributed raw material to home workers and collected the finished thread.

  The cultivation of cotton in Meroë, and the knowledge of how to spin and weave it, reached a high level around the 4th century BC. Textile exports were one of the pillars of Meroë's wealth, suggesting that organized spinning was already tied to trade and economic power long before the Industrial Revolution brought it to European factory floors.

• 5. Mechanization and Its Consequences

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  Samuel Crompton invented the spinning mule in 1779. It is the machine that changed everything about how thread was made and who made it. In a spinning mule, roving is pulled off bobbins and fed through rollers running at different speeds, thinning it evenly. The yarn twists as the carriage moves out and winds onto a cop as the carriage returns. Because the process is intermittent, mule spinning produces a finer, softer, less twisted thread than ring spinning. That quality made mule yarn the choice for fine fabrics and for weft.

  Ring spinning descended from the Arkwright water frame of 1769. Unlike the mule, it creates yarn in a continuous process. Ring yarn is coarser and stronger, with a greater twist, making it better suited for warp. Ring spinning is slower than it might seem, because the thread must travel all the way around the ring, but improvements such as flyer and bobbin and cap spinning built on the same principle.

  The spinning jenny, invented along with the water frame in the late 1700s, made mechanical spinning far more efficient than any hand method and turned cotton manufacturing into a central industry of the Industrial Revolution. The technology was specialized and costly, and it ran on water power. Spinning and weaving shifted out of cottages and into dedicated manufactories, concentrated where water, raw materials, and workers were available, particularly in West Yorkshire. The British government restricted the export of the machinery, protecting its industrial lead.

  After World War I, the colonies where cotton was grown began purchasing and building significant quantities of spinning machinery themselves. Then came open-end and air-jet spinning, followed by the rise of artificial fibers. By that point, most production had migrated to Asia.

• 6. Spinning Today

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  Air-jet and open-end spinning represent the current frontier of industrial fiber production. In open-end spinning, staple fiber is blown by air into a rotor and attaches to the tail of yarn being continuously drawn out of the chamber. Other break-spinning methods use needles or electrostatic forces. These approaches eliminate the roving step, cutting time and cost from the process.

  At the other end of the spectrum, hand spinning with a spindle or spinning wheel persists as a handicraft and hobby. Pre-industrial techniques survive not as relics but as active practice, making it possible to work with wool or unusual vegetable and animal staples that industrial machines are not set up to handle. The roving, the whorl, and the wooden spindle remain useful tools.