Defibrating method, fiber body forming method, and defibrating machine

Patent metadata

Field	Value
Publication number	US-11746468-B2
Application number	US-202017101017-A
Country	US
Kind code	B2
Filing date	Nov 23, 2020
Priority date	Nov 25, 2019
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

A defibrating method includes the steps of: preparing a material which contains fibers and a compound represented by the following formula (1); and defibrating the material.RO(0)m(PO)nH  (1)In the formula, R represents an alkyl or an alkenyl group having 6 to 22 carbon atoms or an alkylaryl group including an alkyl group which has 4 to 20 carbon atoms, E represents an ethylene group, P represents a propylene group, m and n each represent an average number of added moles, m represents a numerical value of 0 to 20, n represents a numerical value of 1 to 10, and (EO)m(PO)n represents a block addition structure.

First claim

What is claimed is:

1. A fiber body forming method comprising:
adding a compound represented by the following formula (1) to a raw material containing fibers;
forming a defibrated material by defibrating the raw material to which the compound is added;
adding a binding material to the defibrated material;
depositing, on a web forming portion, the defibrated material to which the binding material is added; and
heating the defibrated material after depositing the defibrated material on the web forming potion,
RO(0) m (PO) n H  (1)

wherein in the formula, R represents an alkyl or an alkenyl group having 6 to 22 carbon atoms or an alkylaryl group including an alkyl group which has 4 to 20 carbon atoms, E represents an ethylene group, P represents a propylene group, m and n each represent an average number of added moles, m represents the average number of 0 to 20, n represents the average number of 1 to 10, and (EO) m (PO) n represents a block addition structure.

2. The defibrating method according to claim 1 ,
wherein R has 8 to 16 carbon atoms.

3. The defibrating method according to claim 1 ,
wherein in the adding a compound, the compound is added at 2.5 to 16.5 percent by mass with respect to the fibers.

4. The defibrating method according to claim 1 ,
further comprising, before the forming a defibrated material, adding a cationic surfactant to the raw material.

Assignees

• Seiko Epson Corp

Inventors

• Aoyama Tetsuya

Classifications

• Y02W30/64

  Paper recycling · CPC title

• D21B1/061 Primary

  using cutting devices · CPC title

• C08K5/19

  Quaternary ammonium compounds · CPC title

• C08L71/02

  Polyalkylene oxides · CPC title

• D21B1/021 Primary

  by chemical means · CPC title