Single Twist / Multiple Twist
Single twist and multiple twist are terms that refer to yarn twisting methods: single twist, in which a fiber bundle is twisted once to make yarn, and multiple twist, in which several of those yarns are combined and twisted again.
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Definition and Overview
Single twist refers to a single yarn given twist in one direction, such as yarn spun from short fibers. Multiple twist is yarn made by combining two or more single-twist yarns and then twisting them together, usually in the direction opposite to the initial twist.
Twisting is the process of giving yarn strength and cohesion. The distinction between single twist and multiple twist is not a classification by fiber type, weave structure, or fabric name, but by yarn structure and twisting method.
Characteristics
Single twist tends to be lighter than multiple twist of the same thickness, and it is more likely to show fuzz and the texture of the fibers. Depending on the number of twists, raw material, and spinning method, the hand feel can vary greatly from softness to a crisp feel.
Because multiple twist brings several yarns together, irregularity in the yarn is less noticeable, and it has a structure that makes it easier to create roundness and moderate firmness. Fuzz may be reduced, and the surface may appear relatively smooth.
However, strength, luster, moisture absorption, and durability are not determined by the twisting method alone. It is necessary to check the raw fibers, yarn count, twist factor, dyeing and finishing processes, and weaving or knitting density together.
Main Applications
Single-twist yarn is used for shirting, cut-and-sew items, and lightweight woven fabrics that make use of a soft look and lightness. Single-twist yarn with a higher twist may also be used in materials for spring and summer that offer a cool feel.
Multiple-twist yarn is used for shirts, blouses, jackets, pants, uniforms, and other items where a neat surface appearance, moderate resilience, and good tailoring results are desired. Applications vary depending on material design and fabric specifications.
Selection and Handling Notes
When selecting fabric, do not judge it by the single twist or multiple twist label alone; check the composition, yarn count, whether it is single yarn or plied yarn, density, fabric weight, and finishing. Depending on the product application, confirm thickness, sheerness, drape, and seam appearance with a fabric sample.
Shrinkage and twisting during washing are affected not only by the twisting method but also by the raw material and processing conditions. Before mass production, it is important to perform a water soak or washing test and set pattern dimensions based on the shrinkage rate.
In sewing, check the fabric's stretch tendency, grain direction, and how diagonal distortion appears due to yarn twist. In thin or high-density fabrics, an unsuitable needle size, sewing thread, or thread tension can cause puckering or skipped stitches.
- Before cutting, relax the roll and check the width and diagonal distortion.
- For products that will undergo washing processes, carry out a preliminary test under the same conditions as mass production.
- Determine sewing specifications through sewing tests using fabric samples.
Differences from Similar Terms
Single yarn and plied yarn indicate whether a yarn is made from one strand or from two single yarns twisted together. Multiple twist may refer to a structure in which multiple strands are twisted together, not limited to two, and plied yarn is treated as one example of multiple twist.
High-twist yarn refers to yarn with a large number of twists. By contrast, single twist and multiple twist do not refer to how many twists there are, but to the stage at which twisting is applied and the structure in which yarns are combined. Single twist can also be high twist.
Frequently Asked Questions
Which is stronger, single twist or multiple twist?
Does fabric made with single twist or multiple twist shrink when washed?
Whether shrinkage occurs and how much it occurs cannot be determined by single twist or multiple twist alone. Especially in fabrics containing natural fibers, dimensions change depending on scouring, dyeing, finishing, and washing conditions. Check the shrinkage rate under the intended washing conditions before commercialization.
Is multiple twist the same as plied yarn?
A plied yarn made by twisting together two single yarns is a typical form of multiple twist. However, multiple twist is sometimes used to mean twisting together two or more yarns, and it does not necessarily refer only to two-ply yarn. In specifications, confirm the number of strands and the twist direction as well.
