Effect of Hot Box Temperature on Crimping
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Ongoing, First published Jul 26, 2021
https://www.nylonhscc.com/products/chlorine-resistant-spandex/ 
After years of production practice, our company, Highsun Synthetic Fiber Technologies Co., Ltd., gradually found out the influence of hot box temperature on crimping, strength and dyeing of nylon 6.
1. Influence on nylon 6 crimping
Under the production conditions of stretching ratio of 1.239 times, D/Y of 2.10 and speed of 700m/min, the crimp shrinkage and crimp stability increase with the increase of temperature in a certain range. This is because the plasticity of the fiber is improved with the increase of temperature, which makes it easy to deform. So the nylon 6 is fluffy and fully deformed. However, when the temperature is too low (below 182℃), the crimp rate and crimp stability of nylon 6 material become low too.
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