Verfahren und Vorrichtung zur Prozeßführung bei der Herstellung von Papier

摘要

In order to produce paper from fibrous material, a prepared substance is conveyed to a paper machine (15) with a head box. The substance can contain, for example, a mixture of different recycling paper types with cellulose. In accordance with the invention, at at least one point on the prepared substance and/or the paper (200), continuous spectra of electromagnetic radiation and/or continuous spectra of mechanical properties are measured on the substance (A, B, C, D) and/or paper (E, F). Characteristic quantities are derived from these spectra and fed into a state model, from whence a process model is, in addition, derived with the process qualities. In certain cases, discrete physical and/or chemical properties are also used to form the model. The state model and/or process model are used for conducting and optimising the process.