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Yarn Structure

Properties and Performance of Textiles. Yarn Structure. Looking Back. Fabric is made up of yarns, which are made from fibres. Fibres and yarns are interlaces (woven), interlooped (knitted) or bonded together (non-woven) to make fabrics.

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Yarn Structure

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  1. Properties and Performance of Textiles Yarn Structure

  2. Looking Back • Fabric is made up of yarns, which are made from fibres. Fibres and yarns are interlaces (woven), interlooped (knitted) or bonded together (non-woven) to make fabrics. • Yarns are the basic components of all fabric construction  excluding non-wovens.

  3. How fabric is produced

  4. Types of Yarns

  5. Yarn twist • The purpose of twisting the fibres is to hold them together. • The twist is the most important factor in determining properties. • Without twist , yarns have little strength. • A ply yarn is formed by twisting 2 or more simple yarns together.

  6. Low twist vs high twist

  7. Types of Spinning staple Spinning Extrusion Spinning Creates yarns by pushing a fibre forming substance through a spinneret. The substance will the solidify and form a fibre. Rayon, nylon and polyester are created by this method. There are 2 types of extrusion spinning – Wet Spinning and Melt Spinning • Turns short fibres such as cotton or wool into yarns. • Fibres are carded or combed in cotton production. • Woollen and worsten processing refers to wool yarn production.

  8. Activities • Describe the difference between: • melt and wet spinning • woollen and worsted yarns • combed and carded yarns • Choose 1 natural fibre and 1 manufactured fibre. Using your own words and diagrams, create a flow chart on bubbl.usthat shows the spinning process from fibre to yarn. • Research how to hand spin yarns and use woolen fibres create your own yarn

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