Plate conveyor belt for transporting a material web which is to be continuously thermally treated using a gaseous tempering medium, and furnace comprising at least one plate conveyor belt

A plate conveyor belt for transporting a material web to be thermally treated in a continuous flow by a gaseous tempering medium, the plate conveyor belt comprising:

• conveyor belt segments that are connected to one another in articulated fashion, each segment having a flat cover plate having a surface that forms a contact surface to the material web to be treated, and the cover plate having openings for conducting through the gaseous tempering medium conducted through the material web,
• wherein the openings in the cover plate are provided in a configuration corresponding to a transport of a material web that has a width equal to a width of the plate conveyor belt, and
• wherein, for a thermal treatment of a material web that is narrower than the width of the plate conveyor belt, at least along one longitudinal side of the plate conveyor belt, edge-side openings in the cover plates are configured to be blocked by a wall-shaped blocking element with respect to the conducting through of the gaseous tempering medium, the wall-shaped blocking element being impermeable to gas.