A paper recycling method includes defibrating first paper by dry type crushing into defibrated material, transporting the defibrated material using a first transport unit, deinking by an air flow classification of the defibrated material after the transporting by the first transport unit, transporting using the second transport unit the defibrated material after the deinking by the classifying process, and forming second paper with the defibrated material after the transporting by the second transport unit.

Estimating or predicting runnability or end product quality risk level for a pulp or papermaking process is disclosed. The method includes measuring hydrophobicity values of samples originating from a same aqueous process stream. A hydrophobicity measurement signal is produced of measured hydrophobicity values as a function of time. A risk level is calculated for the process. At least one mathematical index is calculated based on the hydrophobicity measurement signal, and optionally based on the amount of particles in the sample, other property of the aqueous stream and/or production data. The mathematical index and optionally the amount of the particles, other property, and/or production data is used as a risk indicator input in the calculation. Based on the risk level calculated for the pulp or papermaking process, the runnability and/or end product quality risk level for the pulp or papermaking process is indicated.

A sheet manufacturing apparatus includes a transport portion that transports a web formed of a material containing fibers, a humidifier that humidifies the web with air mixed with water supplied from a tank, a heating roller that is positioned downstream of the humidifier and that forms a sheet from the web, a moisture meter that is positioned between the humidifier and the heating roller and that measures a moisture amount in the web, a thermometer that measures a temperature of the water in the tank, and a hygrometer that measures humidity. A method of controlling the sheet manufacturing apparatus includes controlling, as a first mode, drive of the humidifier, based on a measurement result by at least one of the thermometer and the hygrometer until when a leading end of the web reaches the moisture meter, and controlling, as a second mode, the drive of the humidifier, based on a measurement result by the moisture meter after execution of the first mode.

A paper web and a method of marking a paper web. The paper web includes a surface having a plurality of sections. At least one section of the plurality of sections has a plurality of positions. The plurality of positions each have an equal length and are obtained by subdividing the at least one section. The paper web also includes ink applied to the surface of the paper web at some of the plurality of positions. The method includes applying a first mark and a second mark to a paper web. The first mark has a start position and is coded to convey an identifier for the paper web. The second mark includes a start position and is coded to indicate a position on the paper web. The start position of the second mark is a predetermined distance after the start position of the first mark.

A paper recycling method includes defibrating first paper by dry type crushing into defibrated material, transporting the defibrated material using a first transport unit, deinking by an air flow classification of the defibrated material after the transporting by the first transport unit, transporting using the second transport unit the defibrated material after the deinking by the classifying process, and forming second paper with the defibrated material after the transporting by the second transport unit.

To provide a sheet former capable of suitably regulating the thickness of a sheet forming body in a width direction in response to factors changing with time. A sheet former includes at least one vessel which stores slurry as a raw material, a wire cylinder immersed in the slurry inside the vessel and making sheets from solid components in the slurry while being rotated, and a sheet-forming amount regulator which regulates an amount of the solid components for making sheets by the wire cylinder in a width direction in accordance with a thickness of a sheet forming body in the approximately width direction formed for making sheets by the wire cylinder.

A paper recycling device includes a dry type defibrator, a first transport unit, a classifier unit, a second transport unit a paper forming unit and a control unit. The dry type defibrator unit is configured to defibrate first paper into defibrated material. The first transport unit is configured to transport the defibrated material after being defibrated by the dry type defibrator unit. The classifier unit is configured to classify by an air flow classification the defibrated material after being transported by the first transport unit. The second transport unit is configured to transport the defibrated material after being classified by the classifier unit. The paper forming unit is configured to for second paper with the defibrated material after being transported by the second transport unit. The control unit is configured to control volume of the first paper supplied to the dry type defibrator unit.

A fiber body manufacturing apparatus includes: a material supply section that supplies a material containing a fiber; a defibrating section that defibrates the material supplied from the material supply section; a separation section that includes a rotating member, a suction portion, and a collection section, the rotating member having a first surface and a second surface that are in a front and back relationship, being at least partially composed of a mesh, and to which a defibrated material generated in the defibrating section is supplied onto the first surface, the suction portion being provided on a side of the second surface of the rotating member and sucking the defibrated material via the mesh to remove foreign matter, the collection section collecting the defibrated material from which the foreign matter on the first surface has been removed; an accumulation section that accumulates the defibrated material from which the foreign matter has been removed; a forming section that forms an accumulated material generated in the accumulation section; a thickness detection section that detects a thickness of a sheet formed by the forming section; and a controller that controls an operation of the separation section based on a detection result of the thickness detection section.

A continuous papermaking machine including a headbox for discharging a suspension of cellulose fibers in water, a forming wire moving in a process direction, the forming wire receiving the suspension from the headbox such that a web is formed on the forming wire, a top former above the forming wire for upwardly removing water from the web, the top former comprising a lead out roll, a dewatering device below the forming wire and downstream from the top former, and an applicator positioned above the forming wire and downstream from the lead out roll of the top former, the applicator discharging onto the web a mixture that includes microfibrillated cellulose and a carrier.

A method of making a papermaking belt is disclosed. The method comprises the steps of: (a) providing a reinforcing structure having a paper-facing side, a machine-facing side opposite the paper-facing side, interstices and a reinforcing component comprised of a plurality of structural components; (b) providing a material for coating the woven reinforcing structure; (c) placing a discrete measuring device into the material for coating the woven reinforcing structure; and, (d) coating the woven reinforcing structure with the material so that the material forms a first surface and a second surface relative to the paper-facing and machine-facing sides, the material being distributed so that the paper-facing side of the reinforcing structure and the measuring device are positioned between the first and second surfaces of the material.