Three elements of the processing technology of the Stenter:
Temperature is the most critical element that jeopardizes the quality of heat setting. Since the textile has undergone heat setting, the existing level of wrinkle removal, the improvement of the surface flatness, the heat resistance of the fabric specifications and other feeding characteristics are closely related to the heat setting temperature. .
Another key processing standard for heat setting in setting time. After the textile enters the heating zone, the time required for heating and setting can be divided into the following parts: heating time: after the textile enters the heating zone, the surface layer of the textile must be heated to the setting temperature time.
Thermal penetration time: After the surface temperature of the textile reaches the setting temperature, the chemical fibers inside and outside the textile have the same thermal penetration time necessary for the same setting temperature.
Molecular structure adjustment time: After the textile reaches the setting temperature, the molecular structure in the chemical fiber must be adjusted according to the setting standard.
Refrigeration time: The time required for the textile to leave the drying room to keep the specifications of the textile fixed and start cooling.
The supporting force suffered by the textile during the entire heat setting process often has a certain degree of harm to the setting quality, including the specifications of the textile, heat resistance, super strength and fracture elongation.
The heat resistance of the weft specification is improved with the expansion of the warp overfeed during setting, while the heat resistance of the weft specification is reduced with the expansion of the width of the Lashin level.
After setting, the average single yarn super-strength of the textile is slightly higher than that of the unshaped, and the weft direction is more pronounced than the warp direction.
After setting, the rupture elongation of the textile fabric decreases in the weft direction with the expansion of the horizontal extension, while the weft direction increases with the expansion of overfeeding.