Setting time is another major 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:
Heating time: The time required to heat the surface of the fabric to the setting temperature after the fabric enters the heating zone. tenter setting machine
Heat penetration time: After the surface of the fabric reaches the setting temperature, the heat penetration time required to make the fibers inside and outside the fabric have the same setting temperature.
Molecular adjustment time: After the fabric reaches the setting temperature, the molecules in the fiber are adjusted 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.
Usually referred to the stereotype time, often refers to the time required for the first three items, excluding the fourth item. If one item 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 thermal penetration and molecular adjustment. Mixed cotton opener
The time required for heating and heat penetration depends on the performance of the heat source, the weight of the fabric unit area, the thermal conductivity of the fiber and the moisture content of the fabric.
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