Transcript Yarn - Health & Social Care & D&T Teaching Resource

Yarn
How is it made?
Yarn construction
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Yarns are made up of fibres:
• Staple fibres are made from short fibres, e.g.
cotton, linen, wool or cut synthetic fibres.
• Filament fibres are made from long continuous
fibres, e.g. silk and synthetics.
• Monofilament yarns consist of a single
continuous filament.
• Multifilament yarns consist of two or more
filament fibres which may or may not be twisted
together.
• Microfibres are made from very fine synthetic
fibres, less than one denier in thickness.
Different yarns
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A single yarn is made by twisting a group of fibres
together.
A multiple ply yarn is made by twisting together a
number of single plied yarns. For example, threeply yarn is made by twisting three single yarns
together.
A cabled yarn is produced by twisting together two
or more multi-plied yarns. It is often called a cable
twist and results in a much stronger, regular yarn.
Yarns are twisted to hold the fibres together. The
more a yarn is twisted, the stronger and thinner it
will be. Different textures can be produced by
spinning them either tightly, loosely or unevenly.