Heating time: After the fabric enters the heating zone, the time required to heat the fabric surface to the setting temperature. Heat penetration time: After the fabric surface reaches the setting temperature, the heat penetration time required for the fibers in each part of the fabric to have the same setting temperature. Molecular adjustment time: After the fabric reaches the setting temperature, the time required for the molecules in the fiber to adjust according to the setting conditions. Cooling time: the time it takes for the fabric to leave the drying room to fix the size of the fabric for cooling. The tension of the fabric during the heat setting process has a certain effect on the quality of the setting, including the dimensional thermal stability, strength and elongation at break of the fabric.