Sunday, February 24, 2019
ELONGATION OF WOVEN FABRIC, WOVEN FABRIC ELONGATION, PROPERTIES OF WOVEN FABRIC
Elongation: the change in length or width of the fabric at breaking force expressed as the term of percentage is called elongation. The factors affecting the fabric elongation are given below:
The material used in the fabric: the type of material used in the fabric influence the fabric greatly. The fabric woven from synthetic fibres has more elongation percentage than natural fibres. The fabric woven from coarse and short staple fibre shows poor elongation than fine and long staple fibre.
Weave: the weave of the fabric affects the fabric elongation up to some extent. The fabric having plain weave has more elongation than satin or twill weave. It happens just because of warp crimp or weft crimp present in the fabric. If the number of interlacing in the fabric is more, the elongation in the fabric will also be more.
Yarn twist: the amount of twist of yarn has influenced the fabric up to some extent. The fabrics woven from high twist yarn poses more elongation than low twist yarn. It happens due to yarn contraction during twisting. When the yarn comes under breaking load conditions, the yarn tends to extend due to this contraction. Since we know that the amount of twist helps to hold the fibres in the yarn, therefore the high twisted yarn has more tensile strength than low twisted yarn. This excess amount of twist helps to prevent fibre slippage while the fabric is being elongated.
Count and construction: the fabric woven of fine yarn pose more elongation than coarse yarn. The number of threads per square inch also affect the elongation percentage. The high thread count fabric poses higher elongation than low thread count fabrics.
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