The invention relates to a corrugated cardboard plant. The corrugated cardboard plant comprises at least one device for producing a respective corrugated cardboard web laminated on one side, from a respective cover web and a respective material web; and a lamination web dispensing device for dispensing a lamination web; and a device for producing a corrugated cardboard web laminated on two sides from the at least one corrugated cardboard web laminated on one side and from the lamination web, said device for producing a corrugated cardboard web laminated on two sides being disposed downstream of the lamination web dispensing device and of the at least one device for producing a respective corrugated cardboard web laminated on one side. The corrugated cardboard plant furthermore has a printing assembly for printing the corrugated cardboard web laminated on two sides, said printing device for producing a corrugated cardboard web laminated on two sides being disposed downstream of the device for producing a corrugated cardboard web laminated on two sides.

The presently disclosed subject matter generally relates to recyclable insulation material for shipping containers, groceries bags, etc., machines for making the recyclable insulation material, and methods for the making the recyclable insulation material. In one aspect, an insulation product may include a first layer and a first continuous paper sheet formed into a first plurality of flexible loops disposed on and attached to the first layer and defining a first plurality of air channels that extend in a direction that is substantially perpendicular with a machine direction of the insulation product. A take up factor of the first continuous paper sheet to the first layer may be greater than 1:1.

A water-based adhesive for the manufacture of laminated cellulosic boards includes monolayer graphene oxide as a glue enhancer. The adhesive includes water, starch, and at least one further polymer selected from natural and soluble synthetic polymers. The adhesive further includes a glue enhancer with monolayer oxide in water and at least one further component selected from the group including stabilizing agents, gelling agents, thickening agents, anti-foaming agents, tackifyers, and damp-proofing resins, in accordance with the polymer(s).

The presently disclosed subject matter generally relates to recyclable insulation material for shipping containers, groceries bags, etc., machines for making the recyclable insulation material, and methods for the making the recyclable insulation material. In one aspect, a method of forming an insulation product may include forming a continuous sheet of paper into a plurality of flexible loops defining a plurality of air channels extending in a direction that is substantially perpendicular with a machine direction of the continuous sheet of paper. The method may also include immediately attaching a first layer of paper and a second layer of paper to the plurality of flexible loops as they are formed so that the continuous sheet of paper retains the plurality of flexible loops between the first layer and the second layer and that the plurality of flexible loops remain unattached with respect to one another.

Sheet packaging has a corrugated ply bonded to a backing ply. The corrugated ply forms parallel flutes. The packaging comprises voids through both the corrugated ply and the backing ply at intervals along the flutes, thereby forming a plurality of insular portions interconnected by flexures. Each insular portion has a flute portion and a backing portion between adjacent voids and bonded together at respective edges and each flexure comprises bonded-together portions of the corrugated ply and the backing ply. The flexures confer hyper flexibility to the packaging wherein each flexure possesses an independent bend axis across which the flexure can both be twisted and bent.

A single-face corrugated paper substrate with a polymeric layer formed from polyethylene attached to the corrugated (i.e. fluted) side of a twenty-three/twenty-three (23/23) basis weight substrate which is positioned around an article and between opposingly oriented trays formed from reinforced corrugated material is provided. The article enjoys protection from scratches, scrapes, and abrasions by virtue of the surrounding paper, but the shipper enjoys reduced cost by virtue of the reduction in packaging materials and reduction in total shipment weight. A method of forming and deploying the aforementioned substrate is also provided.

An apparatus is provided for producing longitudinally corrugated product. The apparatus includes a guide roll for guiding a web of medium material, wherein at least a portion of the guide roll is adapted to be arranged at an angle relative to another portion of the guide roll. The apparatus further includes a plurality of flute forming bars oriented generally along a longitudinal axis of the web to define a first corrugating labyrinth effective to longitudinally corrugate the web to an intermediate geometry. The apparatus further includes a pair of corrugating rollers that cooperate to define, at a nip therebetween, a second corrugating labyrinth effective to longitudinally corrugate the web to a substantially final geometry. The apparatus further includes a web travel pathway for the web that follows a path around a portion of the guide roll, through the first corrugating labyrinth, and through the second corrugating labyrinth.

An apparatus is provided for producing longitudinally corrugated product. The apparatus includes a guide roll for guiding a web of medium material, wherein at least a portion of the guide roll is adapted to be arranged at an angle relative to another portion of the guide roll. The apparatus further includes a plurality of flute forming bars oriented generally along a longitudinal axis of the web to define a first corrugating labyrinth effective to longitudinally corrugate the web to an intermediate geometry. The apparatus further includes a pair of corrugating rollers that cooperate to define, at a nip therebetween, a second corrugating labyrinth effective to longitudinally corrugate the web to a substantially final geometry. The apparatus further includes a web travel pathway for the web that follows a path around a portion of the guide roll, through the first corrugating labyrinth, and through the second corrugating labyrinth.

An assembly for producing a corrugated cardboard web laminated on one side includes a first corrugating roller and a second corrugating roller for producing a corrugated web. A glue application device applies glue to peaks of the corrugated web and a pressure belt apparatus which in turn includes a pressure belt for pressing a cover sheet against the glued peaks of the corrugated web which rests against the first corrugating roller. The assembly has a pressure belt engaging apparatus including a pressure belt engaging device which engages downwards at the pressure belt during a corrugating roller change to minimize and/or eliminate downwardly sagging of the pressure belt at least adjacent to the pressure belt engaging apparatus, and at least one displacement device in connection with the pressure belt engaging device to displace the pressure belt engaging device between a pressure belt engaging position and an idle position.

The presently disclosed subject matter generally relates to recyclable insulation material for shipping containers, groceries bags, etc., machines for making the recyclable insulation material, and methods for the making the recyclable insulation material. In one aspect, a method of forming an insulation product may include forming a continuous sheet of paper into a plurality of flexible loops defining a plurality of air channels extending in a direction that is substantially perpendicular with a machine direction of the continuous sheet of paper. The method may also include immediately attaching a first layer of paper and a second layer of paper to the plurality of flexible loops as they are formed so that the continuous sheet of paper retains the plurality of flexible loops between the first layer and the second layer and that the plurality of flexible loops remain unattached with respect to one another.