US 12,138,865 B2
Method for manufacturing molded product
Shigemi Wakabayashi, Nagano (JP); Masahiko Nakazawa, Nagano (JP); and Takashi Hiraiwa, Fujimi-machi (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Mar. 9, 2022, as Appl. No. 17/690,171.
Claims priority of application No. 2021-038976 (JP), filed on Mar. 11, 2021.
Prior Publication US 2022/0288869 A1, Sep. 15, 2022
Int. Cl. B29C 70/02 (2006.01); B29K 509/02 (2006.01)
CPC B29C 70/025 (2013.01) [B29K 2509/02 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for manufacturing a molded product, comprising:
a deposition step of depositing a mixture including fibers and a complex;
a humidification step of humidifying the mixture by applying a moisture to the mixture; and
a molding step of heating and pressurizing the humidified mixture to obtain a molded product, wherein
the complex includes a binding material particle containing starch, and an inorganic particle adhered to the binding material particle, and
the binding material particle exerts a binding force, for binding the fibers, accompanying with gelatinization of the starch by the heating after the applying of the moisture,
the inorganic particle including a mother particle and a coating layer of a surface treatment agent that coats the mother particle, and
a content of the surface treatment agent based on 100 parts by mass of the mother particle included in the complex being 0.5 parts by mass or more and 7 parts by mass or less.