The plant includes a single facer for the production of a corrugated board. Video cameras detect any gluing defects or other defects of the corrugated cardboard. An image processing unit and a central control unit provide information about the detected defects and can act on one or more operating parameters of the plant.

The invention relates to an assembly for producing an endless corrugated cardboard web laminated on at least one side, the assembly comprising a first corrugating roller and a second corrugating roller for producing a corrugated web provided with a corrugation as well as a glue application assembly. The glue application assembly comprises a glue container for receiving glue, a glue application roller for applying the glue disposed in the glue container to tips of the corrugation of the corrugated web, and at least one glue wave inhibiting assembly arranged in the glue container for inhibiting the formation of glue waves of the glue disposed in the glue container. The assembly for producing an endless corrugated cardboard web laminated on at least one side further has a pressure assembly for pressing a cover layer against the tips, provided with glue, of the corrugated web.

An arrangement for a corrugator for producing corrugated cardboard comprises a material web delivery device for delivering a material web and an edge cutting device, which is arranged downstream of the material web delivery device in a transport direction of the material web and has at least one edge cutting apparatus for edge-cutting the material web, and a digital printing device, which is arranged downstream of the edge cutting device in the transport direction of the material web for printing on the material web.

The invention relates to a liquid device comprising a main part (72), an intermediate body (75) which is arranged above the main part (72), and an opening body (78) which is arranged above the intermediate body (75) and which has openings (79). The intermediate body (75) and/or the opening body (78) can be acted upon and the intermediate body (75) is designed such that the intermediate body (75) is capable of changing a liquid-receiving volume of at least one opening (79), in particular of a plurality of openings (79), by at least partly engaging in the same.

The present invention makes it possible to easily adjust position so that the glue applicator roll and the corrugating roll of a single facer become parallel. In the glue application device of a single facer provided with a pair of corrugating rolls and a glue applicator roll for transferring and supplying glue to the peak-shaped ridge tops of a corrugating medium that is wound on the downstream-side corrugating roll and conveyed, the glue applicator roll position adjustment device according to the present invention is equipped with: support sections for supporting respective ends of the glue applicator roll; and parallel adjustment mechanisms, which are provided on both support sections and are for adjusting the position of the glue applicator roll to be parallel to the downstream-side corrugating roll by moving each end of the glue applicator roll and bringing both ends into contact with the downstream-side corrugating roll.

A shipping mailer has a one-piece body with a first wall and a second wall that are folded together and sealed along sealed side edge portions of the one-piece body, the shipping mailer having a closed first end portion and a second end portion with an opening sealable by a closure. The one-piece body includes a single face corrugated material with a liner layer and a fluted medium layer, and has a center fold line at the closed first end portion from which the first and second walls extend. The fluted medium layer has a plurality of flutes extending parallel to the center fold line, and flutes of the first wall nest with flutes of the second wall. The flutes are crushed in the sealed side edge portions such that the crushed flutes interlock, and the first and second walls fold along inner boundaries of the sealed side edge portions.

The object of the present invention is to provide a hot melt adhesive which is less likely to cause stringing, and has excellent thermal stability and adhesion, in particular adhesion to a paper material. The present invention relates to a hot melt adhesive comprising: (A) an olefin-based polymer, (B) a butyral resin, (C) at least one selected from the group consisting of a fatty acid and a derivative thereof, and (D) a tackifier resin.

A method of manufacturing an adhesive composition for use in the production of paperboard is provided. An amount of water contained within a source container is provided. The water is heated to a first temperature. A rheology modifier is added to the heated water to create a heated solution. A starch is added to the heated solution. The heated solution is mixed for a first period of time to create a heated mixture. Additionally, there may be more independent time segments determining an amount of time which the components of the heated solution are mixed or blended together. Additional elements of the adhesive composition are added to the heated mixture between each mixing time segment.

The single facer includes a first feed path for feeding a first paper web towards a corrugating nip defined between a first corrugating roller and a second corrugating roller. The single facer also includes a second feed path for feeding a second paper web towards a pressure nip defined between the first corrugating roller and a pressure member co-acting with the first corrugating roller. A respective heating system is provided along each feed path. Each heating system includes at least a pair of heating plates.

Disclosed is a gluing device including a reservoir tank of liquid glue; an applicator roll partially immersed in the liquid glue; a doctor roll for adjusting a thickness of the liquid glue adhered to the applicator roll to become uniform; and a pair of glue dams for regulating a width of the liquid glue adherable to the applicator roll. The gluing device is configured to apply the adhered liquid glue on the applicator roll to a corrugated medium of a corrugated paperboard sheet. Each of the glue dams includes a pair of dam units located in spaced-apart relation to each other in a width direction of the applicator roll. The pair of dam units are configured to form a glue-uncoated region interposed between the pair of dam units on an outer peripheral surface of the applicator roll so as to correspond to a trimming region of the corrugated paperboard sheet.