Spreader rollers (metal or rubber) are used to eliminate creases or wrinkles. The spreading e ect of the roller is due to three factors:
- The distance between the spreader roller (B) and the subsequent roller (C).
- The arc generated by the roller on the material.
- The height of the spreader roller.
To obtain the maximum spreading e ect the height must be increased and the distance between the spreader roller and subsequent roller decreased, and vice versa to decrease the e ect. The “Y” distance must not exceed 2.3 times the diameter of the spreader roller, and the “X” distance generally 4.6 times the diameter of the spreader roller. The recommended winding angle is between 15° and 30°.