Description
During operation, the roll body expands as it rotates from the concave side of the curved axle to the convex side. The Stowe Woodward roll is set so that the web approaches the roll on the concave side and leaves on the convex side. In this way the web is spread out (guided) in the cross machine direction. Setting of the bow direction is easily accomplished by rotating the axle by means of swivel-type gear.

The spreading of the web starts when the web leaves the lead-in roll i.e. the last roll which is directly before the Stowe Woodward roll.

As the web leaves the Stowe Woodward roll, spreading is complete and the web will have a tendency to go back to its original state.

The closer the Stowe Woodward roll is to the lead-out roll, the better the spreading effect achieved. The lead-out distance should be kept short in comparison to the lead-in distance.

Bow direction = 90°
When the bow is set in its normal position, the web is spread evenly from the center to both outside edges of the roll.

The distance the web travels at the edges is exactly the same as at the center, thus maxi- mum even spreading from the center to each edge is accomplished.

Bow direction < 90°
To correct loose centers, the bow is rotated into the web so that the center travels a slightly further distance than the edges.

Bow direction > 90°
To correct slack edges, the bow is rotated out of the web so that the edges travel a slightly further distance than the center.