Paper manufacturing apparatus, paper manufacturing method, and paper manufactured thereby

Patent metadata

Field	Value
Publication number	US-9938660-B2
Application number	US-201415109468-A
Country	US
Kind code	B2
Filing date	Sep 26, 2014
Priority date	Jan 23, 2014
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A paper manufacturing apparatus that can manufacture paper with good mechanical strength and/or water resistance in a dry process.
A paper manufacturing apparatus according to the invention has a defibrating unit that defibrates feedstock in air; a mixing unit that mixes an additive containing resin with defibrated material that was defibrated; and a heat unit that heats a mixture into which the defibrated material and the additive were mixed.

First claim

The invention claimed is:

1. A dry paper manufacturing apparatus comprising:
a defibrating unit that defibrates feedstock in air;
a mixing unit that mixes, in air, defibrated material that has been defibrated, and an additive that has a fibrous shape or a powder shape and contains a composite which has at least resin and an anti-blocking agent that are integrated, the anti-blocking agent suppressing blocking of the composite;
a heat unit that heats a mixture into which the defibrated material and the additive were mixed.

2. The paper manufacturing apparatus described in claim 1 , further comprising:
a compression unit that compresses the mixture without heating before or after the heat unit.

3. The paper manufacturing apparatus described in claim 1 , further comprising:
a classifier that classifies the defibrated material and is between the defibrating unit and the mixing unit, wherein
the feedstock is used paper.

4. The paper manufacturing apparatus described in claim 1 , wherein:
the mixing unit mixes the defibrated material and the composite that is further integrated with a coloring agent.

5. The paper manufacturing apparatus described in claim 1 , wherein:
the mixing unit mixes the defibrated material and the composite that contains greater than or equal to 0.1 parts by weight and less than or equal to 5 parts by weight anti-blocking agent to 100 parts by weight of the composite.

6. The paper manufacturing apparatus described in claim 1 , wherein:
the mixing unit mixes the defibrated material and the composite that has the anti-blocking agent covering 20% or more and 100% or less of the composite surface.

Assignees

• Seiko Epson Corp

Inventors

• Gomi Katsuhito
• Nakamura Masahide
• Murayama Yoshiaki

Classifications

• D21F11/00

  Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines · CPC title

• D21B1/06

  by dry methods · CPC title

• D21F9/00

  Complete machines for making continuous webs of paper · CPC title

• D21B1/08 Primary

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

• D21H17/20

  Macromolecular organic compounds · CPC title