A folding device for a flat blank has a plurality of bearing blocks arranged in a row in a first direction, the mutual distance of which can be changed by a drive device and each of which has a support surface for the blank by a holding device. A plurality of folding blades are arranged at a distance next to one another in the first direction, at least one of the folding blades being arranged between immediately adjacent bearing blocks. The folding blades can be adjusted by changing a mutual distance with an additional movement component perpendicular to the blank. Adjacent bearing blocks are coupled in terms of movement via a linkage. The folding blade arranged between adjacent bearing blocks is connected to the linkage so a change in distance between the bearing blocks can be transferred by the linkage to the folding blade for the adjustment thereof.

A warp determination device for a corrugated cardboard sheet manufacturing device is provided with: displacement value measurement method for measuring displacement values of a plurality of corrugated cardboard sheet pieces on the downstream side of a slitter scorer and on the upstream side of a sheet stacking unit; and warp status determination means for dividing a measurement range of the displacement value measurement method according to a width dimension of the plurality of corrugated cardboard sheet pieces, allocating the divided measurement ranges to each of the plurality of corrugated cardboard sheet pieces, and determining a warped status of the corrugated cardboard sheet pieces for each of the plurality of corrugated cardboard sheet pieces on the basis of measurement values from the displacement value measurement method in the allocated measurement ranges.

A warp determination device for a corrugated cardboard sheet manufacturing device is provided with: displacement value measurement method for measuring displacement values of a plurality of corrugated cardboard sheet pieces on the downstream side of a slitter scorer and on the upstream side of a sheet stacking unit; and warp status determination means for dividing a measurement range of the displacement value measurement method according to a width dimension of the plurality of corrugated cardboard sheet pieces, allocating the divided measurement ranges to each of the plurality of corrugated cardboard sheet pieces, and determining a warped status of the corrugated cardboard sheet pieces for each of the plurality of corrugated cardboard sheet pieces on the basis of measurement values from the displacement value measurement method in the allocated measurement ranges.

A cardboard sheet manufacturing system includes an information editing unit storing production state information, operation state information, and warping state information as acquisition information in a storage unit, the information editing unit deleting, in a case where the stored acquisition information includes prescribed information to be deleted, the information to be deleted from the storage unit and outputting the acquisition information stored in the storage unit as editing information. The system also includes an editing information storage unit storing the editing information output from the information editing unit, a prediction model calculation unit calculating a prediction model of the warping state based on the editing information stored in the editing information storage unit; and a control table update unit updating a target value of a control value of a control element in the cardboard sheet manufacturing apparatus, based on the prediction model.

The present invention relates to systems and processes for cutting and creasing corrugated cardboards, and more specifically, to digital system and processes for cutting and creasing corrugated cardboards, wherein the system includes an array of cutting elements that can be dynamically configured to cut and/or crease a wide range of contours.

The present invention relates to systems and processes for cutting and creasing corrugated cardboards, and more specifically, to digital system and processes for cutting and creasing corrugated cardboards, wherein the system includes an array of cutting elements that can be dynamically configured to cut and/or crease a wide range of contours.

Systems for providing efficient manufacturing of sheet or box structures, corrugate sheets, or other products of varying size and structure often with pre-applied print (pre-print) are provided herein. The systems include various features and modules that enable automated control of the corrugator, including the knives, slitters, scorers and cut-to-mark detection system(s), are contemplated. Colored markings may be used to indicate an order change section between two order sections of a roll plan for the manufacturing process. The colored markings are detected as the corrugator runs and, once detected, a controller determines a next set of order instructionse.g., to match the upcoming order. Thus, an order change may occur, thereby enabling automated control of the corrugator based on the new order instructions. Computer readable markings may enable checking of the actual position in the roll plan to an intended position, enabling stopping or changing of the corrugator operation if needed.

Systems for providing efficient manufacturing of sheet or box structures, corrugate sheets, or other products of varying size and structure often with pre-applied print (pre-print) are provided herein. The systems include various features and modules that enable automated control of the corrugator, including the knives, slitters, scorers and cut-to-mark detection system(s), are contemplated. Colored markings may be used to indicate an order change section between two order sections of a roll plan for the manufacturing process. The colored markings are detected as the corrugator runs and, once detected, a controller determines a next set of order instructionse.g., to match the upcoming order. Thus, an order change may occur, thereby enabling automated control of the corrugator based on the new order instructions. Computer readable markings may enable checking of the actual position in the roll plan to an intended position, enabling stopping or changing of the corrugator operation if needed.

A multilayer product made of paper-like material, includes at least one corrugated layer bonded to a first flat layer of cannet?. A least one corrugated layer is constituted by a sheet of cannet? which is shaped so as to form a wave. A method is also related for providing a multilayer product made of the paper-like material.

The invention relates to a method and an apparatus for the production of a corrugated cardboard product. The apparatus comprises a first single facer and a second single facer which are provided in each case with a press-down belt and with a first and a second grooving roller respectively. The first and the second grooving roller are designed for embossing a wave profile onto a first and a second paper web respectively. The press-down belts, together with the respective grooving rollers, for connecting the first and the second paper webs in each case to a non-corrugated web for the production of a first and a second single-flute corrugated cardboard web respectively. The first single facer is equipped with a first oblique guide roller, the axis of rotation of which is inclined at a vertical inclination angle between side margins of the first paper web.