Seiko Epson Corporation

Naoko Omagari

Masahide Nakamura

Naotaka Higuchi

Yoshiyuki Nagai

Hideki Tanaka

Toshiaki Yamagami

Shigemi Wakabayashi

Keigo Yamasaki

Masahiko Nakazawa

Takashi Shinohara

Yuta Inagaki

Toshizo Nishi

Hidemasa Kanada

Takumi Sago

Yoko Nakai

Kensaku Matsuda

Minoru Otagiri

A separation device 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; a weight detection section that detects a weight of the material supplied by the material supply section; and a controller that controls an operation of the separation section based on a detection result of the weight detection section.

Separation device

There is provided a dispersion device including: a supply section having a supply pipe for supplying a material containing fibers together with air, and a chamber that has a first swirl flow forming portion forming a first swirl flow of the air containing the material and a second swirl flow forming portion communicating with the first swirl flow forming portion and forming a second swirl flow in a direction opposite to the first swirl flow of the air containing the material and that is coupled to the supply pipe; a dispersion section that has a casing formed with a discharge port for discharging the material, stirs the material in the casing, and discharges and disperses the material from the discharge port into air; and a coupling section having a communication port through which the first swirl flow forming portion and the second swirl flow forming portion communicate with the casing.

Dispersion device and accumulation device

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.

Fiber body manufacturing apparatus and defibrating device

A defibrating apparatus includes: a defibrating chamber; a discharge path that communicates with the defibrating chamber, and receives the defibrated material discharged from the defibrating chamber; a discharge pipe that discharges the defibrated material through the discharge path; a discharge section that interconnects the discharge path and the discharge pipe; a circular annular screen that defines the defibrating chamber; housings having an outer circumferential wall provided at an interval from the screen, configured to form the discharge path; and a plurality of through-holes provided in the screen, the plurality of through-holes interconnecting the defibrating chamber and the discharge path. The discharge section is provided in the outer circumferential wall, and opened toward the screen.

Defibrating apparatus and fiber body manufacturing apparatus

A sheet producing method includes a web forming step of forming a web by accumulating fiber in a dry system, a water providing step of providing the web with water, and a compression-heating step of compressing and simultaneously externally heating the web provided with water, wherein a water content of the web provided with water in the water providing step is 12% by mass or more, and a compression degree of the web between before and after the compression-heating step is 1/7 or less.

Sheet producing method and sheet producing apparatus

A defibrating apparatus includes a screen and housings, and side walls of the housings have inner surfaces that define the inner surface of a discharge path. Let communication hole be any through-hole that interconnects the defibrating chamber and the discharge path, and let discharge path-side opening edge be the opening edge, close to the discharge path, of the through-hole, then the screen has through-hole rows, each of which is formed by a plurality of communication holes arranged at an interval in a circumferential direction, and the through-hole row is provided at a position where the discharge path-side opening edge of the communication holes is overlapped with the inner surface as seen in a radial direction.

In a defibrating apparatus, when a region, of a discharge path, including a discharge unit is a downstream discharge path, a region, of the discharge path, other than the downstream discharge path is an upstream discharge path, a region, of a screen, constituting the downstream discharge path is a downstream discharge screen, a region, of the screen, constituting the upstream discharge path is an upstream discharge screen, and a through-hole that causes a defibrating chamber to be in communication with the discharge path is a communication hole, the communication hole is provided on the screen such that the air is less likely to pass through the downstream screen than the upstream screen.

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.

Sheet manufacturing apparatus and sheet manufacturing method

A sheet manufacturing method includes forming a web by accumulating a mixture containing a fiber and a water-soluble polysaccharide in a dry manner, a moisture imparting step of imparting the web with moisture, and a pressurizing and heating step of pressurizing and heating the web to which the moisture is imparted, in which the pressurizing and heating step performs pressurizing and heating at the same time, a pressure higher than a pressure applied to the web in the pressurizing and heating step is not applied to the web before the pressurizing and heating step, and heating to a temperature higher than a temperature for heating the web in the pressurizing and heating step is not performed before the pressurizing and heating step.

Sheet manufacturing method and sheet manufacturing apparatus

A separation device includes a separation unit that has a first ejection unit having a first ejection port for depositing a material containing a fiber on a first surface, and a first suction unit having a first suction port for sucking from the first surface toward a second surface so that at least a part thereof overlaps the first ejection port, a second suction unit provided at a position different from the first ejection port and having a second suction port for sucking from the second surface toward the first surface, a detection unit that detects information on foreign matter contained in the material ejected from the first ejection port, an input unit that inputs a detection result of the detection unit, and a control unit that controls a separation condition in the separation unit based on the information input to the input unit.

A separation device includes a first ejection unit that ejects a material containing a fiber together with gas and supplies the material onto a first surface of the mesh, a first suction unit that sucks a part of the material supplied onto the first surface, a second ejection unit that ejects gas toward a second surface, and a second suction unit that sucks and collects, the material that does not pass through the mesh by the first suction unit and remains on the first surface. Q1&#x3c;Q2 and Q3&#x3c;Q4, where a flow rate of gas ejected from the first ejection unit is Q1, a flow rate of gas sucked by the first suction unit is Q2, a flow rate of gas ejected from the second ejection unit is Q3, and a flow rate of gas sucked by the second suction unit is Q4.

Separation device and fiber body deposition apparatus

A separation device includes a rotating member that has a mesh having a first surface and a second surface in a front and back relationship and a protruding member provided on the first surface side of the mesh, a supply unit that supplies a material containing a fiber onto the first surface of the mesh, a suction unit that is provided on the second surface side of the mesh and configured to suck a part of the material supplied onto the first surface, and a collection unit that collects the material deposited on the first surface.

A transport device includes a transport pipe for transporting a material to be transported having at least one of a sheet piece, a fiber, and a powder, and a blower for generating an air flow in the transport pipe, the transport device transports the material to be transported by the air flow, in which the transport pipe has an introduction port into which the material to be transported is introduced, the air flow has a velocity difference in a direction orthogonal to a direction of the air flow in the transport pipe, and the introduction port is provided on a side where a velocity of the air flow is lower.

Transport device and sheet manufacturing apparatus

A defibration treatment apparatus including a feeding hole through which a material is fed, a rotator that rotates about a rotational central axis, a fixed member that covers at least a portion of the rotator, and a discharge opening that discharges a defibrated object obtained by defibrating the material between the rotator and the fixed member. In the defibration treatment apparatus, the rotator includes a plurality of rotary blades that extend in directions away from the rotational central axis, at least a portion of the fixed member is configured of a screen including a plurality of openings, the screen is disposed at a position corresponding to an outer rotational circumference of the rotator, and a discharge path in communication with the discharge opening is provided along the screen and on a side opposite the rotator with respect to the screen.

Defibration treatment apparatus and fiber processing apparatus

A sheet manufacturing apparatus includes an impeller mill, a first sieve, a first belt, a rotary body, a second sieve, a second belt, and a heating roller. The impeller mill defibrates a raw material containing fiber and discharges a defibrated material. The first sieve screens the defibrated material by causing the defibrated material to pass through a first net. The defibrated material passing through the first sieve is deposited on the first belt to form a web. The rotary body has a protrusion radially protruded from a rotation center and divides the web by rotation to form a subdivided body. The second sieve refines the subdivided body by causing the subdivided body to pass through the second net to form a web. The refined subdivided body is deposited on the second belt to form a web. The heating roller heats the web from the second belt to form a sheet.

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Nagano, Japan

Naoko Omagari