Heat-setting is a thermal treatment for synthetic or blended fabrics. Its purpose is to stabilize dimensions and enhance characteristics such as shape stability, wrinkle resistance, and elasticity.
The process involves heating the material to a defined temperature, followed by cooling it while held in a specific configuration.
This action resolves internal tensions created during fiber production or fabric construction (spinning, weaving, or knitting).
Heat-setting is particularly effective for thermoplastic fibers, including polyester, nylon, and acrylic.
It improves fabric performance by minimizing shrinkage and boosting crease recovery and dimensional consistency.