Paper recycling device and paper recycling method

Patent metadata

Field	Value
Publication number	US-9890499-B2
Application number	US-201715471025-A
Country	US
Kind code	B2
Filing date	Mar 28, 2017
Priority date	Jan 12, 2011
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A paper recycling method includes defibrating first paper by dry type crushing into defibrated material, transporting the defibrated material using a first transport unit, deinking by an air flow classification of the defibrated material after the transporting by the first transport unit, transporting using the second transport unit the defibrated material after the deinking by the classifying process, and forming second paper with the defibrated material after the transporting by the second transport unit.

First claim

What is claimed is:

1. A paper recycling method comprising:
defibrating first paper by dry type crushing into defibrated material;
transporting the defibrated material in an air flow using a first transport unit;
deinking by an air flow classification of the defibrated material after the transporting by the first transport unit;
transporting using the second transport unit the defibrated material after the deinking by the classifying process; and
forming second paper with the defibrated material after the transporting by the second transport unit,
wherein in the first transport unit, an air velocity of a deinking side is greater than an air velocity of a defibrating side.

Assignees

• Seiko Epson Corp

Inventors

• Yamagami Toshiaki

Classifications

• D21B1/063

  using grinding devices · CPC title

• D21D5/24

  in cyclones · CPC title

• D21C5/025

  De-inking · CPC title

• D21H11/14

  Secondary fibres (working-up waste paper D21C5/02) · CPC title

• D21B1/08 Primary

  the raw material being waste paper (chemical part D21C5/02); the raw material being rags · CPC title