Elastomeric fabrics elastic properties

Elastomeric covered yam uses spandex as the core wrapped with various yams and fibers such as nylon, polyester, rayon, cotton, acryUc, and so forth, for end products. Based on chemical research, it draws better properties than mbber yam in terms of intensity, stress, and age-resistance. Elastomeric covered yams are divided into conventional covering yam and air-jet covered yam. Elastomeric covered yam gives fabric elasticity and a natural sense of touch. 

Elastic stretch and recovery of elastomeric fabric is tested using ASTM D 4964-96 (2012) method. Fabric slippage will be more for elastic fabrics, which will affect the end results. This can be controlled by using band clamps at both the edges. Kielty et al. (2002) recommended that the stretch properties are better tested by deformation of a sample clamped all around, as in a burst tester. 

Looking back on the history of sportswear evolution, it is easy to see that not only professional athletes but also average sports enthusiasts have searched for wearable clothes that enable them to elevate their body strength and realize their sports potential. The invention of elastic fiber has delivered multiple advances in the sportswear industry. Nowadays, sportswear characteristics with elastic fiber, including compression, freedom of movement, and comfort, are essential for athletes in most sports. Recently, some new elastic fibers with improving properties and functions have been developed, applied, or have large potential applications in the sportswear industry. In this chapter, the recent developments of elastomeric fibers, elastomeric yams, and fabrics used in sportswear are introduced and discussed. 

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