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What is "Twist" - Definition & Explanation

A term that applies to the number of turns and the direction that two yarns are turned during the manufacturing process. The yarn twist brings the fibers close together and makes them compact. It helps the fibers adhere to one another, increasing yarn strength. The direction and amount of yarn twist helps determine appearance, performance, durability of both yarns and the subsequent fabric or textile product. Single yarns may be twisted to the right (S twist) or to the left (Z twist). Generally, woolen and worsted yarns are S-twist, while cotton and flax yarns are typically Z-twist. Twist is generally expressed as turns per inch (tpi), turns per meter (tpm), or turns per centimeter (tpc).
The number of turns about its axis per unit of length of a yarn or other textile strand.
The winding of yarn around itself. More twist improves carpet performance, especially in a cut pile carpet.

Some other terms

Some more terms:

Also called gassing, singeing is a process applied to both yarns and fabrics to produce an even surface by burning off projecting fibres, yarn ends, and fuzz. This is accomplished by passing the...
Removal of loose threads, knots, slubs, burs, and other extraneous materials from fabrics by means of a burling iron, a type of tweezer. The trick is to remove the impurity without damaging the...
A warp knitted fabric in which the resulting knit fabric resembles hand crocheted fabrics, lace fabrics, and nettings. Raschel warp knits contain inlaid connecting yarns in addition to columns of...
A driven roller on a textile machine around which a yarn is passed in order to regulate its speed during the extrusion and further processing of certain man-made fibres. The roller may be heated in...
Moccasin is a native American word, and means a shoe made of deerskin or soft leather. It is made in one piece; the sole is soft and flexible and the upper part is often adorned with embroidery,...

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