A network-based system and method for providing desired moisture set point values for individual papers lines based on the physical properties of each liner and the atmospheric conditions associated with a corrugator is disclosed. The desired moisture set point values are based on the hygroexpansivity of each individual paper liner. Once the moisture set point value has been determined, a conditioning apparatus adjusts a moisture value for each liner in order to tune the post-warp characteristics of the final corrugated product.

Herein described is a plant for the production of web-like paper material comprising a forming equipment, which dispenses a paper material slurry on a support canvas, and a desiccating equipment, which is designed to desiccate the paper material slurry to form the web-like paper material. The desiccating equipment comprises at least one first rotary perforated cylinder and at least one second rotary perforated cylinder, on whose surface the paper material slurry conveyed by the support canvas dynamically adheres, and a heating system, which is designed to generate and deliver hot process air to at least one of the first rotary perforated cylinder and the second rotary perforated cylinder. The first rotary perforated cylinder is a cylinder operating under relative pressure conditions, wherein the hot process air is blown from inside the first rotary perforated cylinder towards the web-like paper material conveyed by the support canvas. The second perforated cylinder is a cylinder operating under relative vacuum conditions, wherein the hot process air is suctioned, through the second rotary perforated cylinder, from web-like paper material conveyed by the support canvas. A recovery circuit is designed for the recovery of the hot process air suctioned from the second rotary perforated cylinder and to deliver such hot process air to the first rotary perforated cylinder.

Herein described is a plant for the production of web-like paper material comprising a forming equipment, which dispenses a paper material slurry on a support canvas, and a desiccating equipment, which is designed to desiccate the paper material slurry to form the web-like paper material. The desiccating equipment comprises at least one first rotary perforated cylinder and at least one second rotary perforated cylinder, on whose surface the paper material slurry conveyed by the support canvas dynamically adheres, and a heating system, which is designed to generate and deliver hot process air to at least one of the first rotary perforated cylinder and the second rotary perforated cylinder. The first rotary perforated cylinder is a cylinder operating under relative pressure conditions, wherein the hot process air is blown from inside the first rotary perforated cylinder towards the web-like paper material conveyed by the support canvas. The second perforated cylinder is a cylinder operating under relative vacuum conditions, wherein the hot process air is suctioned, through the second rotary perforated cylinder, from web-like paper material conveyed by the support canvas. A recovery circuit is designed for the recovery of the hot process air suctioned from the second rotary perforated cylinder and to deliver such hot process air to the first rotary perforated cylinder.

One embodiment provides a papermaking machine, which includes a wire for conveying a fiber web; a trim squirt for making a cut line in the fiber web; a machine reference; and a measurement device for measuring a distance between the cut line and the machine reference, the device comprising a laser adapted to illuminate the cut line and determine a location of the cut line for the measuring. Methods of making and using the papermaking machine are also provided.

One embodiment provides a papermaking machine, which includes a wire for conveying a fiber web; a trim squirt for making a cut line in the fiber web; a machine reference; and a measurement device for measuring a distance between the cut line and the machine reference, the device comprising a laser adapted to illuminate the cut line and determine a location of the cut line for the measuring. Methods of making and using the papermaking machine are also provided.

A fibrous structure. The structure includes a plurality of semi-continuous knuckles extending from portions of the surface of the fibrous structure in a parallel path, wherein the plurality of semi-continuous knuckles are separated by adjacent semi-continuous pillow regions. Each semi-continuous knuckle comprises a plurality of discrete pillows, the plurality of discrete pillows are arranged in a spaced configuration along the path of each of the semi-continuous knuckle.

A fibrous structure. The structure includes a plurality of semi-continuous knuckles extending from portions of the surface of the fibrous structure in a parallel path, wherein the plurality of semi-continuous knuckles are separated by adjacent semi-continuous pillow regions. Each semi-continuous knuckle comprises a plurality of discrete pillows, the plurality of discrete pillows are arranged in a spaced configuration along the path of each of the semi-continuous knuckle.

A defibrating unit that defibrates a raw material including fibers in an atmosphere, an accumulating unit that discharges defibrated matter by rotating a drum unit in which a plurality of openings are formed, a second web forming unit that forms a second web by operating a mesh belt on which the defibrated matter is accumulated, a sheet forming unit that forms a sheet from the second web, a cutting unit that cuts the sheet into a preset size, and a control unit that executes a stop control with a cut operation of the cutting unit as a trigger in a case where an instruction to stop an apparatus is provided are included. In the stop control, the control unit stops operation of the defibrating unit after stopping rotation of the drum unit and movement of the mesh belt.

A defibrating unit that defibrates a raw material including fibers in an atmosphere, an accumulating unit that discharges defibrated matter by rotating a drum unit in which a plurality of openings are formed, a second web forming unit that forms a second web by operating a mesh belt on which the defibrated matter is accumulated, a sheet forming unit that forms a sheet from the second web, a cutting unit that cuts the sheet into a preset size, and a control unit that executes a stop control with a cut operation of the cutting unit as a trigger in a case where an instruction to stop an apparatus is provided are included. In the stop control, the control unit stops operation of the defibrating unit after stopping rotation of the drum unit and movement of the mesh belt.

A fibrous structure. The structure may include a plurality of continuous or semi-continuous knuckles extending from portions of the surface of the fibrous structure in a parallel path, wherein the plurality of knuckles may be separated by adjacent continuous or semi-continuous pillows. Each knuckle may comprise a plurality of discrete pillows, the plurality of discrete pillows may be arranged in a spaced configuration along the path of each knuckle; alternatively, each pillow may comprise a plurality of discrete knuckles, the plurality of discrete knuckles may be arranged in a spaced configuration along the path of each pillow.