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The diameter of the cheese unwinding diameter, that is, the size of the cheese, is mainly due to the fact that the distance between the cheese and the creel is constant and the ball is large. Cheese small, resulting in large balloon, large tension. Therefore, the distance between the cheese and the creel should vary with the size of the cheese.
The height of the bobbin is the height of the gas ring, and the yarn is drawn from the top of the bobbin. The tension is small. When the unwinding to the bottom, the friction between the yarn and the yarn surface increases and the tension increases.
Unhealed tension of the yarn: As the distance between the cheese and the creel, the yarn is unwound due to the self-weight of the yarn and the friction force of the yarn when it is unwound. The high-speed operation produces the centrifugal force, The unwinding tension of the yarn.
Uniform tension: including a single yarn within each single tension and uniformity of the yarn tension, shaft and shaft tension between the uniform
The requirements of the warping have three points: uniform tension, uniform yarn, winding density uniform.
