The setting time and heat source performance of the burner of the stenter setting machine

During the working process of the burner of the stenter setting machine, its temperature is the main factor affecting the quality of heat setting. During the operation, the degree to which the original wrinkles are eliminated after heat setting of the fabric, the improvement of surface smoothness, the dimensional thermal stability of the fabric and other wearing properties are closely related to the height of the heat setting temperature. The setting time of the burner of the stenter setting machine is another main process condition for heat setting. After the fabric enters the heating zone, the time required for heating and setting can be roughly pided into the following parts: 1. Heating time: After the fabric enters the heating zone, the time required to heat the fabric surface to the setting temperature. 2. Heat penetration time: After the surface of the fabric reaches the setting temperature, the fibers in the inner and outer parts of the fabric have the same heat penetration time required for the setting temperature. 3. Molecule 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. 4. Cooling time: the time it takes for the fabric to leave the drying room to fix the size of the fabric for cooling. The setting time of the burner of the stenter setting machine usually refers to the time required for the first three items, and to a certain extent does not include the fourth item. If one item is regarded as a kind of preheating effect, then the setting time only refers to the time required for the second and third items, that is, the time required for thermal penetration and molecular adjustment. The time required for heating and heat penetration depends on the performance of the heat source, the weight per unit area of ​​the fabric, the thermal conductivity of the fiber and the moisture content of the fabric. During the heat setting process, the tension of the fabric has a certain effect on the quality of the setting, including the dimensional thermal stability, strength and breaking elongation of the fabric. The warp dimensional thermal stability increases with the increase of the warp overfeed during setting, while the weft dimensional thermal stability decreases with the increase of the degree of stretching of the door width. The average single yarn strength of the finalized fabric is slightly higher than that of the unshaped one, and the change in the weft direction is more obvious than that in the warp direction. After setting the fabric's breaking elongation, the weft direction decreases as the extension degree increases, while the warp direction increases as the overfeed increases. ! If you are interested in low temperature burners, please contact us for a quote!