Top fold accuracy and mark-free sheet guidance: the right folding roller technology for precise folding results
ExtraGrip folding roller technology
The Stahlfolder TX 96 folding system is equipped with ExtraGrip folding rollers with soft PU. The distribution of steel and polyurethane rings of the ExtraGrip folding rollers is designed in such a way that there is no crossover of steel segments with two folding rollers lying parallel. At the same time the drag force is essentially raised due to the number of polyurethane rings which was increased by approx. 30 % per folding roller. The effect: The rings work exactly in paper running direction so that excellent fold accuracy and an exact straightforward guidance of the signatures is achieved.
Motor-driven folding roller adjustment
For an exact adjustment of the gap of folding rollers and slitter shafts, the Stahlfolder TX 96 folding system is equipped with a motor-driven folding roller adjustment. Here, the paper thickness is measured by the sensor of the double sheet detector at the feeder. A previous piling of paper to feed a learning sheet is not necessary. Therefore, the control system takes over the setting of folding roller gaps and the folding roller traction, considering fold type and paper specification.