Float

Definition and Overview

A float in weaving refers to a state in which the warp yarn or weft yarn passes over a certain section without interlacing. In a weave diagram, it is shown as a section where the yarn appears continuously on the face or back of the fabric. It is not a standalone fabric name, but a term used to describe a weave structure.

The length of a float is related to the number of skipped threads, meaning the number of yarns that do not cross. Using floats intentionally can create luster, patterns, and dimensionality, but overly long floats can also pose practical risks.

Effect on Hand and Function

A weave with long floats shows more of the yarn surface, so depending on the yarn used, it can produce a smooth sheen or a soft touch. Satin weave is a representative structure that uses long floats to give the surface a smooth appearance.

On the other hand, areas with fewer interlacing points allow the yarn to move more easily, making snags more likely on fingernails, hook and loop fasteners, or rough surfaces. The appearance and durability of floats also vary depending on density, yarn thickness, twist, and finishing.

• Yarn floating on the face makes luster and patterns easier to see through light reflection.
• Yarn floating on the back can serve as a structure that supports the face weave or pattern.
• The longer the float, the more care is needed to avoid snagging and yarn movement.

Main Applications

Floats are found in fabrics where sheen and pattern expression are important, such as satin-like dress fabrics, tie fabrics, and Jacquard. They are also used in double weaves that create different appearances on the face and back, and in figured weaves that express patterns through yarn arrangement.

In apparel, they may be used for blouses, dresses, formalwear, and linings. In addition to applications that prioritize design, floats may also be incorporated appropriately through weave design to adjust the hand and appearance.

Selection and Handling Notes

When selecting a fabric, check not only the float length but also the intended use, yarn type, density, and areas prone to abrasion. For garments that are routinely rubbed, it is reassuring to check for snags, abrasion, and yarn distortion around seams using a prototype.

When washing, avoid contact with zippers and hook and loop fasteners on other garments, and consider using a laundry net. The degree of shrinkage varies depending on the fiber type and finishing, so before mass production, check the fabric shrinkage rate and, if necessary, carry out prewashing or straightening.

During sewing, be careful of yarn pulling and seam slippage caused by the needle hole or presser foot. Choose a fine needle and thread suitable for the fabric, and confirm the sewing conditions in advance. For fabrics where floats appear on the surface, damage caused by unpicking is also more noticeable, so test sewing is important.

Differences from Similar Terms

A float refers to the state of the yarn, while satin is one of the basic weave structures that uses many floats. Twill also has floats, but its characteristic is that the interlacing points continue diagonally to form the twill pattern. Plain weave has the most frequent interlacing and generally has short floats.

Pile refers to yarns that stand up from the ground fabric in loops or as a fuzzy surface. Unlike yarn that passes across the surface as a float, pile is a structure in which the loops are left as is or cut to create a pile according to the intended use.

Frequently Asked Questions