# US 9,039,868 B2 · Sheet manufacturing apparatus

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- Number: US 9,039,868 B2
- Document ID: US9039868B2
- Status: Granted
- Kind: B2
- Application number: 14/223,104
- Filed: 2014-03-24
- Published: 2014-10-02
- Granted: 2015-05-26
- Earliest claimed: 2013-03-27
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Yoshiyuki Nagai; Shunichi Seki
- Web page: https://patentgrep.com/patent/US9039868B2

## CPC

- D21H 25/04: Physical treatment, e.g. heating, irradiating (D21H25/18 takes precedence; dryer section of machines for making continuous webs of paper D21F5/00)
- D21B 1/08: the raw material being waste paper (chemical part D21C5/02); the raw material being rags
- D21F 9/02: of the Fourdrinier type
- D21G 9/0036: {controlling the press or drying section}
- Y02W 30/64: Paper recycling
- D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21B: FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21F: PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21G: CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES (winders or rewinders for finished products, means for adjustment of wrinkles or lateral extensions B65H)
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

A sheet manufacturing apparatus includes a defibrating unit configured to defibrate a defibration object including at least a fiber, in air. The sheet manufacturing apparatus forms a sheet by adding quantity of heat to a defibrated material defibrated at the defibrating unit. The sheet manufacturing apparatus includes a measuring unit configured to acquire moisture amount information of the defibrated material or the defibration object, and a controller configured to control the quantity of heat to be added to the defibrated material on the basis of the moisture amount information.

## Claims

### Claim 1

A sheet manufacturing apparatus comprising:
a defibrating unit configured to defibrate a defibration object including at least a fiber, in air, the sheet manufacturing apparatus forming a sheet by adding quantity of heat to a defibrated material defibrated at the defibrating unit;
a measuring unit configured to acquire moisture amount information of the defibrated material defibrated at the defibrating unit, or the defibration object to be defibrated at the defibrating unit; and
a controller configured to control the quantity of heat to be added to the defibrated material based on the moisture amount information acquired by the measuring unit.

### Claim 2 (depends on 1)

The sheet manufacturing apparatus according to claim 1, wherein
the controller increases the quantity of heat when, in the moisture amount information, moisture amount of the defibrated material or the defibration object is larger relative to when the moisture amount of the defibrated material or the defibration object is smaller.

### Claim 3 (depends on 2)

The sheet manufacturing apparatus according to claim 2, wherein
the quantity of heat is based on at least one of heating temperature to be added to the defibrated material and a time for which the heating temperature is added to the defibrated material.

### Claim 4

A sheet manufacturing apparatus comprising:
a defibrating unit configured to defibrate a defibration object including at least a fiber, in air, the sheet manufacturing apparatus forming a sheet by adding quantity of heat to a defibrated material defibrated at the defibrating unit;
a measuring unit configured to acquire moisture amount information of the defibrated material defibrated at the defibrating unit, or the defibration object to be defibrated at the defibrating unit; and
a controller configured to control moisture amount of the defibrated material or the defibration object based on the moisture amount information acquired by the measuring unit.

### Claim 5 (depends on 4)

The sheet manufacturing apparatus according to claim 4, wherein
the controller controls the moisture amount of the defibration object or the defibrated material to be constant based on the moisture amount information.

### Claim 6 (depends on 5)

The sheet manufacturing apparatus according to claim 5, wherein
the controller controls the moisture amount to be constant by drying the defibrated material or the defibration object.

### Claim 7 (depends on 6)

The sheet manufacturing apparatus according to claim 6, wherein
the sheet is formed by pressurizing and heating the defibrated material that has been dried.

### Claim 8 (depends on 5)

The sheet manufacturing apparatus according to claim 5, wherein
the controller adds moisture to the defibrated material or the defibration object in order for the moisture amount to be constant.