The invention relates to a material roll preparation arrangement. The material roll preparation arrangement comprises a receiving apparatus for receiving a material roll to be prepared with a wound material web, and at least one material roll preparation apparatus which is assigned to the receiving apparatus for the preparation of the material roll which is received in the receiving apparatus for further processing, in particular in a corrugator plant.

The invention concerns a corrugating roll for producing a corrugated web, having a fluting, from a material web. The corrugating roll has a corrugating roll body, a central longitudinal axis, a peripheral direction about the central longitudinal axis and a surface fluting with at least one first corrugating tooth, which is arranged peripherally on the corrugating roll body, and at least one second corrugating tooth arranged peripherally on the corrugating roll body and which differs from the at least one first corrugating tooth for reducing corrugating roll operation-related vibrations.

A corrugating roll unit conveyance apparatus includes a mounting base having a first accommodation part for accommodating a corrugating roll unit to be removed and a second accommodation part for accommodating a corrugating roll unit to be installed; and a movement device for moving the mounting base to a first replacement position at which the first accommodation part faces the existing corrugating roll unit, a second replacement position at which the second accommodation part faces a space from which the existing corrugating roll unit has been removed, and a retracted position separated from the first replacement position and the second replacement position.

The plant includes at least one single facer, having a supporting structure, adapted to receive a corrugating unit provided with a first corrugating roller and a second corrugating roller meshing with each other. The plant also includes a magazine having a plurality of seats for receiving corrugating units and movable along a first guide. Associated with the single facer there is provided a shuttle movable between the single facer and the guide of the magazine, adapted to transfer corrugating units from the single facer to the magazine and vice versa.

A method for manufacturing a three-dimensionally deformed plate made of a wood fiber material comprises providing a prefabricated, flat wood fiber material plate as the original plate, preheating the original plate in sections, wetting the preheated section of the original plate with an atomized liquid mixture of water and a separating agent, introducing a section of the original plate that is preheated and wetted with a liquid mixture of water and a separating agent between two rollers of a molding station, wherein the rollers respectively provide a corrugated profile in the peripheral direction of the external surface, such that the original plate is being deformed in sections into a plate with a wave shape, wherein rollers are being used, the respective profiling of which has half-waves which follow one another in the peripheral direction and which at least partially have a different extension in the peripheral direction.

A fluid circulation heating roller according to an embodiment of the present invention includes a roller body having a hollow cylindrical shape, a rotation shaft extending from each of opposite end portions of the roller body and disposed in the same center line, multiple first ducts extending in an axial direction in the roller body so as to heat the outer circumferential portion of the roller body, multiple second ducts extending in the axial direction on the outer circumferential portion of the roller body, wherein the number of second ducts are the same as the number of first ducts, and an insert inserted into at least one of the first or second ducts and extending in the axial direction. The generation of turbulence flow of fluid can be suppressed and laminar flow can be induced, whereby it is possible to maintain fluid-flowing speed and facilitate steam circulation and heat transfer.

The present disclosure is directed to a shipping container with a corrugated medium that lines an interior pocket of the shipping container as well devices and components (e.g., corrugating rollers, corrugating machines, scoring rollers, and scoring machines) that are utilized to manufacture the shipping containers. The corrugated medium has flutes that cushion, support, and protect a product that is shipped within the shipping container. The corrugated medium may include a first portion with first flutes and a second portion with second flutes that are offset relative to the first flutes. The offset first flutes and second flutes results in peaks of the first flutes nesting within valleys of the second flutes, and peaks of the second flutes nesting within valleys of the first flutes.

An apparatus for introducing transverse trapezoidal corrugations into a traveling web is provided, and includes a plurality of corrugating rollers for imparting corrugations to the web. In disclosed embodiments four such rollers are provided in a roller train defining respective first, second and third nips therebetween, wherein the teeth of the first and second rollers have rounded distal faces and those of the third and fourth rollers have flattened distal faces. Methods of yielding a trapezoidal corrugated web also are disclosed.

The plant includes at least one single facer, having a supporting structure, adapted to receive a corrugating unit provided with a first corrugating roller and a second corrugating roller meshing with each other. The plant also includes a magazine having a plurality of seats for receiving corrugating units and movable along a first guide. Associated with the single facer there is provided a shuttle movable between the single facer and the guide of the magazine, adapted to transfer corrugating units from the single facer to the magazine and vice versa.

A single facer comprises: a swingable frame supporting a press roll in such a manner as to allow a gap between one of a pair of corrugating rolls and the press roll to be changed; an adjusting screw contactable with a contact member coupled to the swingable frame; an encoder for detecting vibration of the press roll occurring during formation of a corrugated medium by the pair of corrugating rolls; and a control section for controlling drive of a motor for displacing the adjusting screw. The control section is configured to execute a first control processing of driving the motor until a magnitude of the vibration is reduced to a given value.