WIRE ARMS STRETCHERS, with rotational movement. Tension roll moves through arms operated by air rides or pneumatic cylinders. Wire tension is proportional to air pressure. Pneumatic system allow continuous tension compensation.

FELT STRETCHER FOR PRESS OR DRY END, with linear movement of tension roll support carriages. We can propose different stretcher design, SCREW JACK STRETCHER, where carriages move driven by a rotating screw jack system.
PNEUMATIC COMPENSATED SCREW JACK STRETCHER where a couple of air cylinders keep constant tension. Tension roll stroke is adapted to Wire/Felt length and to available room. Models with electric, hydraulic or pneumatic motor.

CONTROLLING TENSION
The simplest way to control the tension is the manual system. The operator decides the tension and stretch or slack the Fabric by acting on the pushbutton (in the case of motor) or adjusting the air pressure (in the case of air rides or pneumatic cylinders). Operator is then requested to handy measure the tension. Stretcher can be associated with a LOAD CELL, mounted on a fixed roll, which continuously detect a signal, transform it in actual tension and sent it to a display. In the automatic control system the Load Cell send the signal to a regulator which adjust roll position to match pre-set tension value.