US 11,752,728 B2
Laminated substrate using fiber-reinforced thermoplastic plastic, and molded product manufacturing method using same
Takeshi Ishikawa, Toyohashi (JP); Hayato Ogasawara, Toyohashi (JP); and Masao Tomioka, Toyohashi (JP)
Assigned to Mitsubishi Chemical Corporation, Tokyo (JP)
Filed by Mitsubishi Chemical Corporation, Tokyo (JP)
Filed on Jan. 26, 2021, as Appl. No. 17/159,118.
Application 17/159,118 is a continuation of application No. 15/039,449, granted, now 10,919,259, previously published as PCT/JP2014/082242, filed on Dec. 5, 2014.
Claims priority of application No. 2013-252980 (JP), filed on Dec. 6, 2013.
Prior Publication US 2021/0146653 A1, May 20, 2021
Int. Cl. B29C 70/08 (2006.01); B32B 37/06 (2006.01); B32B 5/02 (2006.01); B32B 5/18 (2006.01); B29C 70/46 (2006.01); B32B 5/24 (2006.01); C08J 5/24 (2006.01)
CPC B32B 5/022 (2013.01) [B29C 70/081 (2013.01); B29C 70/083 (2013.01); B32B 5/18 (2013.01); B32B 5/24 (2013.01); B32B 37/06 (2013.01); C08J 5/243 (2021.05); C08J 5/244 (2021.05); B32B 2260/021 (2013.01); B32B 2260/046 (2013.01); B32B 2305/076 (2013.01); B32B 2605/00 (2013.01); B32B 2605/18 (2013.01); C08J 2300/22 (2013.01); Y10T 156/1044 (2015.01)] 17 Claims
OG exemplary drawing
 
1. A method for manufacturing a molded product of a laminated substrate, the method comprising:
(1) heating a prepreg substrate including reinforcing fibers and a thermoplastic resin to a temperature higher than or equal to the melting point or the glass transition point of the thermoplastic resin that constitutes the prepreg, and then laminating a sheet material having a porosity of from 50% to 99% on at least one surface of the prepreg substrate to thereby obtain a laminated substrate, or (2) laminating a sheet material having a porosity of from 50% to 99% on a prepreg substrate including reinforcing fibers and a thermoplastic resin on at least one surface of the prepreg substrate, and then heating the laminate thus obtained to a temperature higher than or equal to the melting point or the glass transition point of the thermoplastic resin that constitutes the prepreg to thereby obtain a laminated substrate,
the method subsequently comprising introducing the laminated substrate into a mold that is set to a temperature lower than or equal to the melting point or the glass transition point of the thermoplastic resin that constitutes the prepreg, and then stamping molding the laminated substrate.