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:
May. 27, 1997
Filed:
May. 28, 1996
Yoshihiko Nakamura, Nishinomiya, JP;
Masahiro Matsumura, Katano, JP;
Yasuo Fukuhara, Osaka, JP;
Yukio Hatta, Minoo, JP;
Masaharu Yamamoto, Nagoya, JP;
Makizi Miyao, Kawagoe, JP;
Kiyohiro Nagao, Hiki-gun, JP;
Takayuki Fukuda, Kawachi-gun, JP;
Hiroshi Toshima, Iruma-gun, JP;
Shigekazu Takanohashi, Kawagoe, JP;
Akihiro Atsumi, Yokohama, JP;
Matsushita Electric Works, Ltd., Osaka, JP;
Abstract
In a process for manufacturing a prepreg for use as an electrically insulating material, a main epoxy resin composition and a subsidiary resin composition containing a hardener which have been separately filtered and metered are quickly mixed into a mixture resin composition, a reinforcing member is coated with a uniformly thin film of the mixture resin composition by a die coater under specific temperature, average residence time and low shear conditions, the coated reinforcing member is heated in non-contact manner by an infrared ray heater to have the member impregnated with the resin composition of the film, the member is further heated in non-contact manner by a floating dryer to have the resin composition semi-hardened, and the member is unified through compaction rolls, whereby the prepreg in the form of a sheet-shaped fiber reinforced composite material is continuously manufactured.