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US 4,420,299 AGranted
Continuous operation press
Assigneede Mets N.V.
InventorAlbert De Mets
Life of this patent
Estimating the term…
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Assigneede Mets N.V.
InventorAlbert De Mets
Estimating the term…
A continuous operation press for manufacturing and/or coating, veneering, etc., a single-layer or a multiple-layer board web made of a mat which includes wood chips, wood fibers, etc. The press includes a carrying run of an upper belt which continuously circulates at a preset constant speed and a carrying run of a lower belt, with both belts preferably being made of steel. A friction reducing arrangement such as a slide or friction reducing coating extends over an entire width of a press area and is disposed on an upper and lower abutment, with the entering belts sliding over the friction reducing coating. A pressurized liquid lubricant is supplied to the friction reducing coating. The friction reducing coating extends over at least a main press area as well as a calibration area in which upper and lower slide coating extend parallel to one another. A friction reducing coating may also be provided in the pre-press area with the respective friction reducing coatings being bent or inclined so as to form a press gap. The lubricant is fed to the friction reducing surface of the friction reducing coating through openings formed in the friction reducing coating, with the openings not extending as far as the lateral edge of the friction reducing coating but being spaced therefrom.
A continuous operation press for at least one of producing and treating a board web, the press having a press area including a main press area and a calibration area disposed rearwardly of a main press area, as viewed in a conveying direction of the board web, upper and lower belts for defining upper and lower carrying runs between which the board web is carried, the upper and lower belts being adapted to continuously circulate at a constant speed, characterized in that upper and lower abutment means extending substantially perpendicular to a conveying direction of the board web are provided and extend over an entire width of the press area of the press, the upper and lower abutment means are respectively disposed in proximity to an underside of the upper and lower belts, a friction reducing means is arranged on the respective abutment means in at least one of the main press area and calibration area, each friction reducing means including a friction reducing surface cooperable with the underside of the upper and lower belts, the friction reducing means extends over an entire width and length of at least one of the main pressing area and the calibration area, and means for supplying a lubricant to the friction reducing means including lubricant supplying openings formed in each of the friction reducing means at a position spaced from lateral edges of the friction reducing means.
Dependencies are inferred from the claim text.