Design/Technology Quiz - Textiles 01 (Answers)
This KS3 Design and Technology quiz takes a look at textiles. Textiles (fabrics) that are made from natural fibres like cotton, wool, silk or linen are manufactured in three stages - spinning, weaving or knitting and finishing. Most synthetic fibres like nylon, polyester and viscose are normally continuous filament fibres and do not require the spinning part of the process. Natural fibres require spinning because they usually have short fibres. Spun fibres are called yarn. Yarn for weaving is twisted tightly to make it strong and so woven fabrics don't stretch much. Yarn for knitting is twisted more loosely to make it stretchy.
Woven fabrics are made on a loom and are made from a weft and a warp. The weft is the yarn that goes across the width of the fabric and the warp is along the length of the fabric. In some types of weaving, the weft is doubled back on itself to form the selvedge. This is an edge of the fabric that does not fray. Knitted fabrics are made by looping together the yarn. There are two types, weft knitted (made by hand or machine) and warp knitted (made by machine).
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It is also strong and does not tear easily
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The yarn is arranged in an over and under pattern
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Tencel is a trade name, it is a type of rayon
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Also called straight grain
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Cotton jersey is the one of the most common knitted fabrics
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Fraying is where the fibres of a fabric have started to come apart
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Doubling the weft back on itself creates a neat edge that doesn't fray
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Envelopes can be made out of Tyvek. It is waterproof, provides a good printing surface and is very difficult to tear
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Wet washing a dry clean only fabric will affect its shape and size
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The symbol looks like the front of a tumble dryer!
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