When using disc tension device, the uneven tension of yarn will cause considerable additional dynamic tension. Especially when the winding speed increases, this additional tension will increase dramatically.
High speed adaptive disc tension device with a pressure spring washer is pressurized as well, in the same conditions the unevenness of the yarn winding speed and simple, the tension fluctuation is much smaller, and when the winding speed from 400 meters per minute increased to 600 m / min, the vast increase of dynamic tension small amount. But in actual production, due to the spring pressure is not easy to adjust the pressure, so the use of it is also limited.
Compared with the tension device placed vertically and horizontally, the absolute amount of tension fluctuation is equal under the same pressure condition, while the relative volume is slightly larger.
It must be pointed out that the basis of the above analysis is the assumption that the yarn is incompressible, but in fact the yarn itself is a kind of elastic plastic body, it is under tension device will become flat, thus beating tension on the set of Yc values, actually than the calculated value, and additional dynamic tension will be less than the juice the calculated value, strictly speaking, this can only qualitatively explain the problem.