DEVICE FOR PRODUCING A WEB MATERIAL, MORE PARTICULARLY A WEB MATERIAL CONTAINING PLANT FIBERS, AND METHOD PRODUCING A WEB MATERIAL, MORE PARTICULARLY A WEB MATERIAL CONTAINING PLANT FIBERS

The invention relates to a device (1) for producing a web material, more particularly a web material containing plant fibers, the device comprising a first press belt and a second press belt, which press belts can circulate. Each of said press belt is disposed around at least two circulation cylinde...

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Bibliographische Detailangaben
1. Verfasser:	MALINDRETOS, Lars
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUTORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTINGOF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL NAILING OR STAPLING MACHINES IN GENERAL PERFORMING OPERATIONS PRESSES PRESSES IN GENERAL TRANSPORTING WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:	The invention relates to a device (1) for producing a web material, more particularly a web material containing plant fibers, the device comprising a first press belt and a second press belt, which press belts can circulate. Each of said press belt is disposed around at least two circulation cylinders, at least one of which can be driven at least indirectly by means of a controller (9). The device has a lubricant-dispensing apparatus (10), which is suitable for at least indirectly forming a lubricating film (11) having a lubricating-film thickness on the inner surface of the first and second press belts. The device has at least one sensor (14, 15), which is suitable for determining a lubricating-film thickness of the lubricating film. High-quality belt lubrication should be provided, more particularly also over a long period of time, with at least largely constant lubrication properties, for the operation of a device for producing a web material, more particularly a web material containing plant fibers, which belt lubrication is to be economically maintained during the operation of the device. For this purpose, it is proposed that the controller (9) is suitable for calculating an average lubricating-film thickness from at least two results of the sensor (14, 15) which are obtained with a temporal offset and to determine a lubrication volume in accordance with said average lubricating-film thickness, and that the controller is designed such that the lubricant-dispensing apparatus (10) outputs a certain proportion of the determined lubricant volume, more particularly between 5% and 350% of the determined lubricant volume, within a designated period of time, more particularly within a time interval, for example 24 hours. The invention also relates to a method for producing a web material, more particularly a web material containing plant fibers.