# US 2024/0052568 A1 · Sheet manufacturing apparatus

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- Number: US 2024/0052568 A1
- Document ID: US20240052568A1
- Status: Published application
- Kind: A1
- Application number: 18/366,722
- Filed: 2023-08-08
- Published: 2024-02-15
- Earliest claimed: 2022-08-10
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Naoto ARUGA
- Web page: https://patentgrep.com/patent/US20240052568A1

## CPC

- D21F 1/52: Suction boxes without rolls
- D21F 9/00: Complete machines for making continuous webs of paper
- D21F 1/34: Construction or arrangement of spraying pipes
- D21F: PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON

## Abstract

There is provided a sheet manufacturing apparatus that manufactures a sheet from a material containing fibers, including: an accumulation section that forms a web by accumulating the material containing fibers by an air flow; a web transport section including a transport belt that comes into contact with one surface of the web and holds the web; a humidification section provided to face the one surface of the transport belt and applying moisture from the other surface side of the web; and a suction section provided to face the humidification section with the transport belt interposed therebetween, in which the suction section has a plurality of suction ports for suctioning air, the humidification section has a discharge port for discharging humidified air, and among the plurality of suction ports, a first suction port and the discharge port are disposed to face each other.

## Claims

### Claim 1

A sheet manufacturing apparatus that manufactures a sheet from a material containing fibers, comprising:
an accumulation section that forms a web by accumulating the material containing fibers by an air flow;
a web transport section including a transport belt that comes into contact with one surface of the web and holds the web;
a humidification section provided to face the one surface of the transport belt and applying moisture from the other surface side of the web; and
a suction section provided to face the humidification section with the transport belt interposed therebetween, wherein
the suction section has a plurality of suction ports for suctioning air,
the humidification section has a discharge port for discharging humidified air, and
among the plurality of suction ports, a first suction port and the discharge port are disposed to face each other.

### Claim 2 (depends on 1)

The sheet manufacturing apparatus according to claim 1, wherein
opening shapes and sizes of the first suction port and the discharge port are the same.

### Claim 3 (depends on 1)

The sheet manufacturing apparatus according to claim 1, wherein
the plurality of suction ports further include a second suction port provided adjacent to the first suction port in a transport direction of the transport belt.

### Claim 4 (depends on 3)

The sheet manufacturing apparatus according to claim 3, wherein
the suction section has a first suction duct coupled to the first suction port and a second suction duct coupled to the second suction port.

### Claim 5 (depends on 4)

The sheet manufacturing apparatus according to claim 4, wherein
the second suction duct is provided adjacent to the first suction duct in the transport direction.

### Claim 6 (depends on 4)

The sheet manufacturing apparatus according to claim 4, wherein
the first suction duct suctions humidified air discharged from the humidification section.

### Claim 7 (depends on 4)

The sheet manufacturing apparatus according to claim 4, wherein
the second suction duct brings the web into close contact with the transport belt by air intake.

### Claim 8 (depends on 4)

The sheet manufacturing apparatus according to claim 4, wherein
the first suction duct has a first intake fan,
the second suction duct has a second intake fan, and
the first intake fan and the second intake fan are individually controlled.

### Claim 9 (depends on 3)

The sheet manufacturing apparatus according to claim 3, wherein
the suction section has a third suction port provided at a position adjacent to the first suction port, and the first suction port is positioned between the second suction port and the third suction port.

### Claim 10 (depends on 9)

The sheet manufacturing apparatus according to claim 9, further comprising:
a third suction duct coupled to the third suction port.