Sheet manufacturing apparatus and sheet manufacturing method

Patent metadata

Field	Value
Publication number	US-2016229129-A1
Application number	US-201514984100-A
Country	US
Kind code	A1
Filing date	Dec 30, 2015
Priority date	Feb 6, 2015
Publication date	Aug 11, 2016
Grant date	—

Abstract

A sheet manufacturing apparatus includes a mixing unit that mixes fibers and a composite in the atmosphere, a forming unit that deposits and heats a mixture mixed by the mixing unit to form a sheet; in which the composite is resin particles with at least a portion of a surface coated by inorganic fine particles, and an absolute value of an average charging amount of the composite is 40 μC/g or higher.

First claim

What is claimed is:

1 . A sheet manufacturing apparatus comprising:
a mixing unit configured to mix fibers and a composite in the atmosphere; and a forming unit configured to deposit and heat a mixture mixed by the mixing unit to form a sheet, wherein the composite is resin particles with at least a portion of a surface coated with inorganic fine particles, and an absolute value of an average charging amount of the composite is 40 μC/g or higher.

2 . The sheet manufacturing apparatus according to claim 1 ,
wherein the volumetric average particle diameter of the resin particles is 25 μm or less.

3 . The sheet manufacturing apparatus according to claim 1 ,
wherein the volumetric average particle diameter of the inorganic fine particles is 40 nm or less.

4 . The sheet manufacturing apparatus according to claim 1 ,
wherein the composite is not divided into the resin and the inorganic fine particles during mixing in the mixing unit.

5 . The sheet manufacturing apparatus according to claim 1 ,
wherein the forming unit includes
a discharging unit configured to discharge the mixture,
a mesh belt configured to accumulate the mixture, and
a suction unit configured to suction gas that includes the mixture via the mesh belt.

6 . The sheet manufacturing apparatus according to claim 1 ,
wherein the content of the inorganic fine particles in the composite is 0.1% by weight or more to less than 4% by weight.

7 . The sheet manufacturing apparatus according to claim 1 ,
wherein the mixing unit includes a plurality of rotary units having blades that rotate, and mixes the fibers and the composite by being passed through the rotary unit.

8 . A sheet manufacturing method comprising:
mixing fibers and a composite, in which a resin and inorganic fine particles are integrated, in air; and depositing, heating and forming a mixture in which the fiber and the composite are mixed.

Assignees

• Seiko Epson Corp

Inventors

• Ueno Yoshihiro

Classifications

• D21F1/82

  adding fibre agglomeration compositions · CPC title

• D04H1/413

  containing granules other than absorbent substances · CPC title

• D04H1/58

  by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives (in combination with needling D04H1/488) · CPC title

• D04H1/732

  by fluid current, e.g. air-lay · CPC title

• B29C70/06 Primary

  Fibrous reinforcements only · CPC title