Uses and Characteristics of Double-Core Yarn

Release time:

2025-02-26

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Abstract

Double-core yarn is a type of yarn made by twisting together two different types of long filaments as the core fibers, with short fibers serving as the outer wrapping material. Due to the differing properties of the two core filaments, they complement each other effectively, giving the yarn superior performance. For example, the cotton-wrap T400 + spandex combination—T400 is characterized by its excellent bulkiness.

Double-core yarn is a type of yarn produced by twisting together two different types of long filaments—each with distinct properties—while using short fibers as the outer covering material. Due to the complementary nature of the two core filaments, which have differing characteristics, the resulting yarn exhibits superior performance. For example, in the case of cotton-covered T400 plus spandex, the T400 filament boasts excellent bulkiness, outstanding elastic recovery, superior dimensional stability compared to spandex, and higher tensile strength. Moreover, it can withstand repeated stretching without losing its integrity. By using these two filaments—with their respective exceptional elastic properties—as the core strands and wrapping them with cotton fibers, the resulting yarn not only retains the softness, elasticity, and moisture-absorbing qualities of cotton but also benefits from the enhanced strength, abrasion resistance, and dimensional stability of the spandex. In addition to these advantages, the yarn maintains the relaxed feel characteristic of cotton-spandex blends while offering improved durability and tear resistance. When worn, it provides a comfortable, non-constricting, and non-pressuring fit, ensuring stable sizing over time. Fabrics made from this yarn exhibit minimal shrinkage and excellent shape retention.

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