The invention relates to a paper making machine (1) comprising a forming section (2) in which a fibrous web (W) can be formed, a drying section (5) in which a formed fibrous web (W) can be dried; and a reel-up (11) on which a dried fibrous web (W) can be wound into a roll (12). The paper making machine (1) is arranged to carry a fibrous web (W) in the machine direction (MD) along a predetermined path (P) and the paper making machine (1) has at least one water jet cutting device (17, 18, 19) arranged to cut the fibrous web (W) that is moving in the machine direction (MD) such that the fibrous web (W) is divided into at least one waste part (23a, 23b, 30) and a remaining part (24, 29). The paper making machine (1) is arranged to direct the at least one waste part (23a, 23b, 30) away from the predetermined path (P) and to convey the remaining part (24, 29) further in the machine direction (MD) along the predetermined path (P). The paper making machine (1) further comprises a blowing device (20, 21, 22) arranged to blow gas or air against the water jet cutting device (17, 18, 19) in a direction toward the remaining part of the fibrous web (24, 29) such that fiber particles that have been released by the cutting action of the water jet cutting device (17, 18, 19) are blown onto the surface (25) of the remaining part (24, 29) of the fibrous web (W) and follow the remaining part (24, 29) of the fibrous web along the predetermined path (P). The invention also relates to a method in which gas or air is blown in a direction toward the remaining part of the web such that fiber particles that have been released by the cutting action of the water jet cutting device (17, 18, 19) are blown onto the surface (25) of the remaining part (24, 29) of the fibrous web (W). The stream of air or gas is given a shape which is circular cylindrical or conical and expanding in the direction in which the stream moves.

A control device using, as a learning target, a transporting apparatus, a rotation control section which controls at least one of a rotation speed of a first roller and a rotation speed of a second roller, and a position detection section which detects a position of the transport target matter, the control device including a state variable acquisition section which acquires a state variable and a detection result of the position detection section, the state variable being based on information of a state of the transport target matter and information of an environment to which the transport target matter is exposed, and a learning section which learns a control expression for calculating a control value of the rotation control section based on a dataset containing the state variable acquired by the state variable acquisition section and the detection result of the position detection section.

A sheet manufacturing apparatus including an accumulating unit that causes a defibrated product to accumulate in a dry manner and forms a web, a moisture adding unit that adds moisture from a side of one surface of the formed web such that a moisture content of the web is equal to or more than 12 mass % and equal to or less than 40 mass %, and a heating unit that heats the web to which moisture is added. The heating unit has a first portion that comes in contact with the one surface of the web and a second portion that comes in contact with another surface of the web, and the heating unit heats the web in a state of a surface temperature of the first portion being higher than a surface temperature of the second portion.

Disclosed is a full-automatic method for manufacturing plant-fiber molding products and margin trimming and molding machines. The invention achieves functions: wet semi-finished product forming, hot press mold solidifying, and automatic margin trimming. The full-automatic method is as below: pulps are continuously made into wet semi-finished products by means of a suck-filter forming device, which is alternatively fed into hot-press molds of the left hot-press mold solidifying device and the right hot-press mold solidifying device after being heated to a certain temperature in hot-press molds for hot-press drying and solidifying. The dried and solidified products fall into the left positioning collecting tray and the right positioning collecting tray respectively from the left hot-press top mold and the right hot-press top mold, and are positioned therein. The full-automatic plant-fiber molding, mold solidifying and margin trimming machine includes a forming and solidifying device, a transfer device and a margin trimming device.

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 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 sheet manufacturing apparatus including an accumulating unit that causes a defibrated product to accumulate in a dry manner and forms a web, a moisture adding unit that adds moisture from a side of one surface of the formed web such that a moisture content of the web is equal to or more than 12 mass % and equal to or less than 40 mass %, and a heating unit that heats the web to which moisture is added. The heating unit has a first portion that comes in contact with the one surface of the web and a second portion that comes in contact with another surface of the web, and the heating unit heats the web in a state of a surface temperature of the first portion being higher than a surface temperature of the second portion.

A sheet manufacturing apparatus includes a pressing unit, a separate sheet shaping unit, a transportation unit, and a cutting-off unit. The pressing unit includes a pressing roller that presses a material containing fibers and a binder, which has a function of bonding the fibers together, to form the material into a shape of a continuous sheet. The separate sheet shaping unit cuts the continuous sheet into a shape of a separate sheet. The transportation unit is provided between the pressing roller and the separate sheet shaping unit and transports the continuous sheet formed by the pressing unit to the separate sheet shaping unit. The cutting-off unit is provided between the pressing roller and the transportation unit. When transportation abnormality occurs on the continuous sheet that is being transported, the cutting-off unit cuts off, from the continuous sheet, a part of the continuous sheet where the transportation abnormality occurs.

A hopper includes a receiving member having a guide surface that guides a non-flat strip-shaped sheet and a posture adjusting unit that adjusts a posture of the falling sheet and sends it to the guide surface, and a discharge unit that discharges the sheet. The posture adjusting unit may have a posture adjusting surface continuous with the guide surface and bent from the guide surface so as to form a ridge line at a boundary portion with the guide surface.

A sheet manufacturing apparatus includes a pressing unit, a separate sheet shaping unit, a transportation unit, and a cutting-off unit. The pressing unit includes a pressing roller that presses a material containing fibers and a binder, which has a function of bonding the fibers together, to form the material into a shape of a continuous sheet. The separate sheet shaping unit cuts the continuous sheet into a shape of a separate sheet. The transportation unit is provided between the pressing roller and the separate sheet shaping unit and transports the continuous sheet formed by the pressing unit to the separate sheet shaping unit. The cutting-off unit is provided between the pressing roller and the transportation unit. When transportation abnormality occurs on the continuous sheet that is being transported, the cutting-off unit cuts off, from the continuous sheet, a part of the continuous sheet where the transportation abnormality occurs.