process and device for aligning and jointly processing flaccid workpiece layers . the workpiece layers to be processed jointly are brought toward one another in the hanging position by endless conveyors . a scanning and aligning station is located in the delivery path of the two endless conveyors . the workpiece layer is temporarily removed from the respective conveyor in at least one of the endless conveyors and aligned in relation to the other workpiece layer . the workpiece layer is then returned in the aligned position to the conveyor . after which the workpiece layers that are associated with one another will leave the scanning and aligning station together . the present invention permits simplified fastening of clamps for the workpiece layers to the endless conveyors . they are fixed there by permanent magnets , whose magnetic field in the scanning and aligning station is temporarily abolished in order for the alignment process to be able to be carried out with low friction .