US 12,286,755 B2
Binder and formed body producing method
Shigemi Wakabayashi, Nagano (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jul. 28, 2022, as Appl. No. 17/875,492.
Claims priority of application No. 2021-125034 (JP), filed on Jul. 30, 2021.
Prior Publication US 2023/0047851 A1, Feb. 16, 2023
Int. Cl. D21H 17/28 (2006.01); D21H 11/14 (2006.01); D21H 17/68 (2006.01)
CPC D21H 17/28 (2013.01) [D21H 11/14 (2013.01); D21H 17/68 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A formed body producing method comprising:
an accumulating step of accumulating a mixture including cellulose fibers and a binder, the binder including
starch particle configured to mutually bind the cellulose fibers when water is provided, and
inorganic oxide particles, wherein
the binder includes a composite particle in which the starch particle and the inorganic oxide particles are integrated such that the inorganic oxide particles are attached to the surface of the starch particle before the accumulating step,
the inorganic oxide particles contain carbon, and
the content of the carbon is 2% by mass or more relative to the mass of the inorganic oxide particles;
a humidifying step of providing the accumulated mixture with water to facilitate a hydrogen bond between the cellulose fibers and the starch particle of the binder; and
a forming step of obtaining a formed body by heating and applying pressure to the mixture provided with water.