Defibrating unit

Patent metadata

Field	Value
Publication number	US-9840809-B2
Application number	US-201715473847-A
Country	US
Kind code	B2
Filing date	Mar 30, 2017
Priority date	Oct 9, 2013
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

A defibrating unit includes a rotating unit and a fixing unit. The rotating unit and the fixing unit are arranged so as to be apart from each other with a gap therebetween in an intersecting direction that intersects with a rotating shaft of the rotating unit. The rotating unit includes a surface that stands up along an axial direction of the rotating shaft and that is arranged on a side section in the axial direction and arranged at a side where a defibration object is introduced. The fixing unit includes a plurality of plates that are layered in the axial direction, and the plates has a plurality of convexities that protrude at a side facing the rotating unit.

First claim

What is claimed is:

1. A defibrating unit comprising:
a rotating unit; and
a fixing unit including a plurality of plates that are layered in an axial direction of a rotation shaft of the rotating unit, the plates having a plurality of convexities that protrude at a side facing the rotating unit,
the rotating unit and the fixing unit being arranged such that the fixing unit covers an outer surface of the rotating unit, and the rotating unit and the fixing unit are apart from each other with a gap therebetween in an intersecting direction that intersects with the rotating shaft of the rotating unit,
the rotating unit including a surface that stands up along the axial direction, the surface being arranged on a side section in the axial direction and arranged at a side where a defibration object is introduced,
wherein the rotating unit rotates inside of the fixing unit to carry out a dry-type defibrating process on the defibration object.

2. The defibrating unit according to claim 1 , wherein
the plates of the fixing unit are layered such that the convexities of adjacent plates among the plates are contacted to each other.

3. The defibrating unit according to claim 1 , wherein
the surface of the rotating unit extends radially in a direction from the rotating shaft to the fixing unit.

Assignees

• Seiko Epson Corp

Inventors

• Higuchi Naotaka
• Yamagami Toshiaki
• Abe Nobumasa

Classifications

• D21B1/06 Primary

  by dry methods · CPC title

• B02C18/141

  with axial flow · CPC title

• B02C18/146

  with a rotor comprising a plurality of axially contiguous disc-like segments each having at least one radially extending cutting element · CPC title

• D21D5/18

  with the aid of centrifugal force · CPC title

• B02C4/30

  Shape or construction of rollers · CPC title