The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 07, 2023

Filed:

Mar. 29, 2022
Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventors:

Masahide Nakamura, Nagano, JP;

Hideki Tanaka, Nagano, JP;

Yoshiyuki Nagai, Nagano, JP;

Yoko Nakai, Nagano, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21F 7/00 (2006.01); D21F 1/66 (2006.01); D21F 3/02 (2006.01); D21F 9/04 (2006.01); D21F 11/06 (2006.01);
U.S. Cl.
CPC ...
D21F 7/003 (2013.01); D21F 1/66 (2013.01); D21F 3/0272 (2013.01); D21F 9/04 (2013.01); D21F 11/06 (2013.01);
Abstract

A sheet manufacturing method includes a web forming step of forming a web by accumulating a defibrated product in a dry manner, a moisture imparting step of imparting the web with moisture, a pressurizing step of pressurizing the web to which the moisture is imparted, and a heating step of heating the web to which the moisture is imparted, in which a water content of the web to which the moisture is imparted in the moisture imparting step is 12% by mass or more, a pressure applied to the web in the pressurizing step is 0.2 MPa or more, and a temperature of the web in the heating step is 100° C. or lower.


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