Abstract: A device for the production of corrugated, protective separators for batteries which are made of woven polyester material. The device is provided with two alternating sets of shaping rods and two sets of clamping jaws which are movable in both the vertical and lateral direction. A third set of jaws is movable only in the vertical direction. The shaping rods are inserted into alternating channels in the material while the material is securely held by the clamping jaws and the material is hardened by means of a furnace. Once the channels are heat set, the shaping rods are withdrawn and the separator is severed by means of a cutting unit. A new piece of material is then positioned for similar fabrication.