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.
Patent No.:
Date of Patent:
Jun. 19, 2018
Filed:
Dec. 15, 2014
Honda Motor Co., Ltd., Tokyo, JP;
Fukui Prefectural Government, Fukui-shi, Fukui, JP;
Shuichiro Yoshida, Wako, JP;
Keiichi Kondo, Fukui, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
FUKUI PREFECTURAL GOVERNMENT, Fukui-Shi, JP;
Abstract
A method for producing a molded article of a fiber-reinforced plastic include molding a fiber-resin mixture containing an inorganic reinforcing fiber and a thermosetting resin under heat and pressure. The elapsed time since the thermosetting resin reached a molding temperature at which a hardening reaction proceeds is measured, the loss angle δ of the thermosetting resin is measured in a dynamic viscoelasticity measurement, and the relationship between the elapsed time and the loss angle δ is evaluated to calculate the range of the elapsed time, within which the loss angle δ is 0.55 to 1.57 rad after the loss angle δ reached the maximum value, as the pressurization start range. The fiber-resin mixture is heated to the molding temperature and pressure application to the fiber-resin mixture is started within the pressurization start range, to obtain the molded article of the fiber-reinforced plastic.