Abstract: An adhesive applicator unit for a web of corrugated board comprises a frame which houses an adhesive applicator roll, and an adhesive pre-metering roll which is disposed underneath the applicator roll, and an adhesive re-metering roll which is disposed by the side of the applicator roll, each of which is rotatably drivably mounted. Formed between the adhesive pre-metering roll and the adhesive applicator roll is an adhesive pre-metering nip where pre-metering of the adhesive takes place. Between the adhesive applicator roll and the adhesive re-metering roll, provision is made for an adhesive re-metering nip where final re-metering and calibration of the adhesive film takes place.

Abstract: The cutting device (1) for a continuous material, in particular a corrugated web, consists of rotating paired cutter bars (5, 6) mounted in bearings above one another, with blades (8) which run in the lengthwise direction of the cutter bars. Each cutter bar (5, 6) is connected directly with a driving motor (10) on each end (9). A synchronizing device (11, 12, 13) for the cutter bars (5, 6) is present.FIG. 1 is the main illustration.

Abstract: A heating device (1) for a corrugated cardboard facility includes several heating plates (3) arranged sequentially along a path in the advancing direction of a sheet of corrugated cardboard (2). Compression elements (4) are arranged above the heating plates (3) in position to act on the sheet of corrugated cardboard (2) as it advances along the path. An intake belt (e) is located in a starting area (a) of the heating plates (3) between at least a part of the sheet of corrugated cardboard (2) and at least one compression element (4.1, 4.2).

Abstract: The invention relates to a process for manufacturing corrugated board in which the corrugated board is produced by gluing at least three individual constituent webs (3, 5, 7) respectively on two sides oriented toward each other, wherein in a single work cycle, at a first glue application point (A), a first constituent web (3) is coated with glue and at a second assembly point (B), the first constituent web (3) is glued to a second constituent web (5) to form a half-finished web (31), and wherein in the same work cycle, at a second glue application point (D), glue is applied to a third constituent web (7) or to the half-finished web (31) and the third constituent web (7) is glued to the half-finished web (31) at a second assembly point (C) that is removed in the web travel direction in relation to the first assembly point (B). Furthermore, the invention relates to a device for carrying out the process according to the invention.

Abstract: A cross cutter for web stock, in particular for a corrugated cardboard web, has tube-shaped cutter cylinders (4, 5) formed of a composite fiber material which are rotatably mounted in pairs above each other in a machine frame (2, 3). Cutter holders (15) for cutters (16) are fastened on the cutter cylinders, which are disposed along the circumference of each cutter cylinder extending diagonally. Counterweights (17) are located on the cutter cylinders opposite the cutter holders. The cutter cylinders mesh with each other via gear wheels (10), by which the cutter cylinders can be driven. The cutter cylinders (4, 5), the cutter holders (15) and the counterweights (17) are made of a composite fiber material with a heat expansion coefficient near or equal to 0 mm/K. The bearings (7) at both ends of the cutter cylinders are fixed bearings.

Abstract: In a process for manufacturing corrugated cardboard, corrugated cardboard is produced by gluing several individual webs (10, 11, 31) to each other by their mutually opposite surfaces. Several individual webs (10, 11, 31) are conveyed to an assembly point (A) and then moved over a heating device (38). The distance between the glue application points (B, C) and the assembly point (A) of the individual webs (10, 11) varies according to the speed of the webs.

Abstract: The process for heating a moving web, in particular a corrugated board web, in addition to a supply of heat to the one outer side of the moving web, also provides supply of heat to the other outer side of the web (5). A preheater (1) with a first heating face (3), which is associated with a movable deflection roll, is connected to a second heating face (13) connected to the deflection roll (10). With its other outer side, the web (5) is guided via this second heating face.

Abstract: A machine for the manufacture of a single-face corrugated board web comprises a pressing device for pressing a liner web against a paper web provided with a corrugation. This pressing device has a pressing belt, of which the tension over its width is individually adjustable in that it is guided along a plurality of tensioning devices which are independent of each other and arranged one beside the other.

Abstract: A device for the production of one-sided corrugated paperboard with two corrugated rollers which corrugate a paper sheet. A glue mechanism for applying glue onto the corrugated paper sheet has a glue applying roller cooperating with a corrugated roller, a glue dosing element and a glue container. A pressing roller presses a cover sheet against the coated, corrugated paper sheet. Chambers are constructed on both sides of the glue applying roller. The chambers are sealed off, with their first edges against the first corrugated roller or the pressing roller and, with their other edges, are sealed off against the glue mechanism. The chambers have connections for high pressure sources, in order to press, by means of high pressure the corrugated sheet against the corrugated roller. Both edges of the pressure chambers sealing off against the glue mechanism cooperate with surfaces of the glue mechanism which do not convey any glue to the corrugated roller.

Abstract: One-sided corrugated board machine having at least two pairs of corrugated rollers, each pair forming an assembly including a lower corrugated roller and an upper corrugated roller. Each of the pairs of rollers is supported on a movable, lockable bearing bracket that is movably secured to walls or supports of the machine. A movable clamping roller and a movable glue-applying device is provided such that they can be moved away to allow the assembly to be moved from one position to another. When it is desired to exchange one assembly for another the clamping roller and the glue-applying device are moved out of the way. The bearing bracket supporting one assembly is then moved from a work position to a rest position and the bearing bracket supporting another assembly is moved from its rest position to the work position replacing the first assembly.

Abstract: Straight line cutting and/or groove machine for moving material webs, especially for corrugated paper webs. The machine has at least one drive station with several interacting tool pairs for cutting or grooving the material web. The tools are located above and below the material web. The upper and lower tools are firmly clamped on a shifting tube by a controlled braking mechanism. The shifting tube is fastened on a slide part which sits on an adjustment spindle and is driven by a positioning motor. The tools are clamped on a shifting tube in the desired intervals spaced adjacent to each other. The straight line cutting and/or groove machine permits rapid, precise positioning of the tools.

Abstract: Apparatus for the production of a corrugated cardboard having a cover-lining on at least one side, with an upper grooved roll and a lower grooved roll which have outwardly open annular grooves in distribution over their length, to which a suction source is connected through nozzles held by carriers, of which nozzles two in each case are arranged opposite to one another in the region of the paper web entry and exit of the lower grooved roll, fitting into an annular groove, characterized in that each annular groove (12) has a width substantially less than its depth, in that each nozzle (13, 13') which fittingly fills the annular groove possesses a pressed-flat pipe end (14, 14') and in that at least the outer nozzles of the nozzles arranged in a row are connectable additionally to an air blast source (32).

Abstract: A sheet stacking method and apparatus having conveyor belts for feeding overlapping cut sheets of cardboard in a flow to a stacking station, in which in order to form a gap in the flow a second conveyor belt is driven faster than a first conveyor belt and, during the time the second belt is driven at the faster rate, a third conveyor belt lifts the sheets off the second belt and drives them at the same speed as the first conveyor belt until the sheet downstream of the gap has left the second belt, whereupon the second belt is again driven at the same speed as the first belt and the third belt replaces the flow of sheets onto the second belt.

Abstract: Apparatus is provided for the production of a corrugated pasteboard having a cover coating on at least one side. The apparatus includes a toothed corrugating element, a toothed corrugating counter-element co-operating therewith, a glue applicator and a drying apparatus. At least one corrugating element is an endless element (2) which loops at least partially around the other element (1). In this manner the noise generation and roll wear are reduced, the quality of the corrugated cardboard is improved, the paper consumption and difficulties of adjustment of parts of the apparatus are reduced and the feed and introduction of the paper web are facilitated.

Abstract: Apparatus for automatically detecting the end of or a tear in a web travelling through a corrugated cardboard installation or the like. A web sensing device having mutually opposed sensors positioned adjacent each edge of the web detects web tears or the end of the web. Automatic execution of a web splicing operation thereupon is effected by a control device which activates web-splicing means.

Abstract: An apparatus for fixing the leading edge of a second rolled web to a point at or near the trailing edge of a first rolled web. The present invention is an improvement over the disclosure of U.S. Pat. No. 3,837,954, issued Sept. 24, 1974, wherein the leading edge of a second roll was adhered to a transfer roll while the trailing end of the first web was contacted by a suitable base roll. In this improvement, a fluid operated carriage forms a resiliently braked loop following the base roll and permits the web at the base roll to slow as needed to pick up the second web while not diminishing the speed of exiting of the web from the transfer apparatus. The carriage is moved in one direction to compensate for this change in relative speeds. The carriage is then caused to move in the opposite direction to generate a smoothly increasing force resisting such yielding then progressively increasing the pull on the web and its speed of withdrawal from the second roll.

Abstract: A machine for cross-cutting a web of material. A roller-mounted knife carrier is supported along its length on a bend-resistant support by supporting plates which are rotatably driven in synchronization with the knife carrier. The plates are of generally circular configuration with recesses on the circumference thereof to permit passage of the knife therethrough.

Abstract: The invention relates to apparatus for pressing a moving web of material against a supporting surface, specially to press a web of corrugated cardboard against a heating part in a corrugated cardboard production system, comprising a stationary supporting surface over which the web of material is moved, also comprising press members acting in operating position via a press surface upon the web of material and adjustment means which transfer the press members from the operative position into an inoperative position and vice versa.