False-twist Textured Thread

Definition and Overview

False-twist textured thread is a processed thread given crimp by a texturing process in which filament thread is temporarily twisted, heated, and then untwisted. Crimp refers to the fine waviness or ripple added to the fiber.

It is often used for synthetic fibers that retain their shape well with heat, and polyester and nylon are typical examples. DTY is generally used as an abbreviation for thread that has undergone drawing and false-twist texturing.

Texture and Function

Compared with the smooth, lustrous impression of filament thread before processing, false-twist textured thread tends to trap air inside the thread and has a fuller, softer texture. In woven and knitted fabrics, it is characterized by an appearance that is easy to make matte and a moderate thickness.

Because the crimp stretches and contracts, elasticity and recovery may be obtained depending on the material, knitting or weaving structure, and processing conditions. However, its stretch behavior and elongation differ from stretch materials made with polyurethane, and it does not necessarily have strong elasticity.

Main Applications

False-twist textured thread is used in knit fabrics for cut-and-sew garments, innerwear, sportswear, and legwear, and in woven fabrics for blouses, shirts, pants, skirts, and linings. Depending on the thread thickness and degree of crimp, it is designed for a wide range from lightweight to medium-weight fabrics.

It is used not only for autumn and winter items that require warmth and fullness, but also for spring and summer items that take advantage of combinations with lightweight properties and moisture-absorbing quick-dry finishes. Seasonality is judged not only by whether false-twist texturing is used, but also by the material, fabric weight, structure, and finishing process.

How to Choose and Handling Notes

When selecting a textile, check the raw fiber, thread thickness, strength of the crimp, knitting or weaving structure, and fabric weight, and confirm with a swatch whether it matches the required thickness, stretch, and surface feel. Even with the same DTY designation, texture and elasticity vary depending on the specifications.

Fabrics with crimp may change in dimensions and surface feel due to washing, heat, or moisture. It is important to perform a washing test before mass production and confirm the shrinkage rate. In sewing, align the grain and cut the fabric, then adjust feed amount, thread tension, and needles to match the stretch of the fabric.

• For ironing, check the suitable temperature for the material and whether a pressing cloth is needed on the care label.
• Strong heat or excessive pressure may cause shine or changes in texture.
• To prevent seam distortion and puckering, check sewing conditions with a test stitch.

Differences from Similar Terms

False-twist textured thread refers to the thread processing method and the processed thread itself, while polyester and nylon are names of raw fibers. In addition, jersey and tricot are knitting structures and types, and may be made using false-twist textured thread.

High-twist thread is thread with a large amount of twist to create a crisp feel and cool sensation, and its purpose and post-processing structure differ from false-twist textured thread. Filament thread and spun thread are classifications based on thread construction, and false-twist textured thread is mainly made by processing filament thread.

Frequently Asked Questions