Manufacturing Process And Materials For Elastic Bands

Elastic band materials consist of rubber, polyester, adhesive, and elastic fibers. Commonly used synthetic rubbers include *cis*-1,4-polyisoprene rubber (IR) and *cis*-1,4-polybutadiene rubber (BR). Depending on the manufacturing method, woven elastic bands are produced by interlacing cotton or chemical fiber warp and weft yarns with a set of rubber strands (latex or spandex) according to a specific pattern; knitted elastic bands primarily utilize stretch nylon yarn; and braided elastic bands (also known as spindle-braided bands) are created by braiding warp yarns around a rubber core along a figure-eight path using spindles.

Elastic core: Traditionally made primarily of natural latex (rubber strands), modern versions often use spandex (or Lycra) due to its superior resistance to aging and chlorine, as well as better elasticity.

Outer wrapping yarn: Commonly made of polyester (high strength, deformation resistance), nylon (abrasion resistance), cotton (skin-friendly), or polyester-cotton blends (balancing elasticity and comfort); these are used to knit or wrap the core material to form the webbing structure.