The hot plate (11) includes an upper plate (61) joined to a lower plate (63) along respective sides parallel to each other. A heat transfer fluid circulation chamber (65) is defined between the upper plate (61) and the lower plate (63), with at least a first inlet (83) of the heat transfer fluid and at least a first outlet (87) of the heat transfer fluid. The lower plate (63) has two downwardly bent edges (63.2), extending along the sides of the upper plate joined to the lower plate. Stiffening ribs (79) are joined to the lower plate (63), along the heat transfer fluid circulation chamber, and to the downwardly folded edges (63.2s) of the lower plate (63).

In a press area, a wet paper is pressed against a heating surface to heat the wet paper with a conveying surface to conveying the wet paper to form a pressure regulating gap between the heating surface and the conveying surface. The pressure regulating gap is provided in a size less than a thickness of the wet paper and more than a thickness of recycled paper to be produced therefrom.

A drying method and to a drying device (2) for a moist material web (4) which is composed of a textile fibrous material and which has for example been compacted using liquid jets (45). The drying device (2) includes a drying chamber (22) with an aeration (ventilating) device (29) and an inlet (18), an outlet (19) and a fluid-permeable conveying device (23) for the running material web (4). The material web (4) is transported within the drying chamber (22) by the conveying device (23) and is dried using a heated gas, in particular air. The drying device (2) additionally has a suction device (5) which locally suctions and discharges liquid, in particular water, which is contained in the material web (4) by a suction flow (6) at one or more suction locations (53) at the material web (4).

The hot plate (11) includes an upper plate (61) joined to a lower plate (63) along respective sides parallel to each other. A heat transfer fluid circulation chamber (65) is defined between the upper plate (61) and the lower plate (63), with at least a first inlet (83) of the heat transfer fluid and at least a first outlet (87) of the heat transfer fluid. The lower plate (63) has two downwardly bent edges (63.2), extending along the sides of the upper plate joined to the lower plate. Stiffening ribs (79) are joined to the lower plate (63), along the heat transfer fluid circulation chamber, and to the downwardly folded edges (63.2s) of the lower plate (63).

A drying method and to a drying device (2) for a moist material web (4) which is composed of a textile fibrous material and which has for example been compacted using liquid jets (45). The drying device (2) includes a drying chamber (22) with an aeration (ventilating) device (29) and an inlet (18), an outlet (19) and a fluid-permeable conveying device (23) for the running material web (4). The material web (4) is transported within the drying chamber (22) by the conveying device (23) and is dried using a heated gas, in particular air. The drying device (2) additionally has a suction device (5) which locally suctions and discharges liquid, in particular water, which is contained in the material web (4) by a suction flow (6) at one or more suction locations (53) at the material web (4).

In a press area, a wet paper is pressed against a heating surface to heat the wet paper with a conveying surface to conveying the wet paper to form a pressure regulating gap between the heating surface and the conveying surface. The pressure regulating gap is provided in a size less than a thickness of the wet paper and more than a thickness of recycled paper to be produced therefrom.