The setting time of the stenter setting machine
Aug 10, 2023
Stenter setting machine Because after the fabric is heat-set, the extent to which the existing wrinkles are eliminated, the surface smoothness is improved, the dimensional thermal stability of the fabric and other wearable properties are closely related to the heat-setting temperature.
The setting time 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 divided into the following parts:
1. Heating time: After the fabric enters the heating zone, the time required to heat the surface of the fabric to the setting temperature.
2. Heat penetration time: After the surface of the fabric reaches the setting temperature, the heat penetration time required to make the fibers in each part of the fabric have the same setting temperature.
3. 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.
4. Cooling time: the time it takes for the fabric to come out of the drying room to fix the size of the fabric for cooling.
The setting time usually referred to by the stenter setting machine often refers to the time required for the first three items, not including the fourth item. If one is regarded as a preheating effect, then the setting time only refers to the time required for the second and third items, that is, the time required for heat 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.
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