Process and apparatus for producing a molded fiber article

A process for producing a molded fiber article comprising the steps

• dissolving of fibrous materials in water to form a fibrous material suspension in a pulper,
• dehumidifying of the fibrous material suspension by pressing to form a molded fiber article in a mold
• drying the molded fiber article by supplying heat to the mold and
• demolding of the molded fiber article from the mold,
• in which
• during a mold drying of the molded fiber article, the molded fiber article is subjected to electromagnetic waves to dry the molded fiber article in the mold until a moisture content of the molded fiber article of not more than 10% by weight or not more than 7.5% by weight or not more than 5% by weight is achieved,
• wherein
• the molded fiber article is dried in a drying station and then demolded from the mold in a demolding station, wherein the pulper, the drying station and the demolding station;
• and
• wherein either:
• electromagnetic waves are generated in the drying station by a wave generator and are introduced via a waveguide into a capacitor plate with a mold receiving area, and wherein the capacitor plate has a first dielectric layer in the mold receiving area, and a mold made of an electrically conductive material is arranged in the mold so that the capacitor plate forms a first capacitor with one first mold half of the mold, and wherein a second dielectric layer is provided in a contact region between the first mold half and a second mold half, so that the first mold half and the second mold half form a second capacitor;
• or
• between a capacitor plate and a ground plate, the mold is directly received, wherein the mold is formed of an electrically insulating material, so that the capacitor plate and ground plate form a capacitor.