Sheet manufacturing apparatus

Patent metadata

Field	Value
Publication number	US-9394649-B2
Application number	US-201514625592-A
Country	US
Kind code	B2
Filing date	Feb 18, 2015
Priority date	Feb 28, 2014
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

A sheet manufacturing apparatus includes a defibrating unit configured to defibrate a defibration object containing fibers in the air, a supply unit configured to supply additive agents to defibrated material that has been defibrated in the defibrating unit, a deposition unit configured to deposit the defibrated material and the additive agents, and a heating unit configured to heat a web deposited by the deposition unit. The supply unit has a moisture adding unit configured to add moisture to the additive agents.

First claim

What is claimed is:

1. A sheet manufacturing apparatus, comprising:
a defibrating unit configured to dry-defibrate a defibration object containing fibers;
a supply unit configured to supply additive agents to defibrated material that has been dry-defibrated in the defibrating unit, the supply unit having a moisture adding unit configured to add moisture to the additive agents to be supplied to the defibrated material;
a deposition unit configured to deposit the defibrated material and the additive agents which have been added to the defibrated material at the supply unit, to create a web; and
a heating unit configured to heat the web created at the deposition unit.

2. The sheet manufacturing apparatus according to claim 1 , further comprising
a first transfer unit arranged downstream relative to the defibrating unit and upstream relative to the deposition unit in a transfer direction in which the defibrated material is transferred, the first transfer unit being configured to transfer the defibrated material and the additive agents to the deposition unit,
the supply unit further having
a storage unit configured to store the additive agents to be supplied to the defibrated material, and
a second transfer unit configured to transfer the additive agents stored in the storage unit to the first transfer unit, and

the moisture adding unit being configured to add the moisture to the additive agents transferred in the second transfer unit.

3. The sheet manufacturing apparatus according to claim 2 , wherein
the moisture adding unit has a sprayer port configured to spray the moisture, and
the sprayer port is arranged in the second transfer unit on a side closer to the storage unit than the first transfer unit.

4. The sheet manufacturing apparatus according to claim 2 , further comprising
a second moisture adding unit configured to add moisture to the first transfer unit and arranged further downstream in the transfer direction than a joint portion at which the second transfer unit is jointed to the first transfer unit and the first transfer unit and the second transfer unit communicate with each other.

5. The sheet manufacturing apparatus according to claim 1 , wherein
the supply unit is configured to select to supply or not supply the additive agents, and the moisture adding unit is configured to add the moisture when the additive agents are supplied.

6. The sheet manufacturing apparatus according to claim 1 , wherein
the supply unit is configured to control a supplied amount of the additive agents,
the moisture adding unit is configured to control adding of the moisture, and
the moisture adding unit is configured to control the adding of the moisture in response to the supplied amount of the additive agents.

Assignees

• Seiko Epson Corp

Inventors

• Nagai Yoshiyuki

Classifications

• D21F7/003 Primary

  Indicating or regulating the moisture content of the layer · CPC title

• D21F9/00

  Complete machines for making continuous webs of paper · CPC title