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:
Feb. 05, 2013
Filed:
Mar. 10, 2008
Toshikazu Takeda, Tokyo, JP;
Masaki Shimada, Tokyo, JP;
Hidehiko Hino, Tokyo, JP;
Masaki Arazoe, Tokyo, JP;
Toshikazu Takeda, Tokyo, JP;
Masaki Shimada, Tokyo, JP;
Hidehiko Hino, Tokyo, JP;
Masaki Arazoe, Tokyo, JP;
Nippon Steel Composite Co., Ltd., Tokyo, JP;
Abstract
It is an object of the present invention to provide round fiber-reinforced plastic strand, a manufacturing method thereof, and a fiber-reinforced sheet which eliminate limitation in forming speed and limit on number of products capable of being manufactured at a time, do not require use of a release agent, eliminate the necessity of operations such as roughing after forming, and thus permit a considerable reduction of the manufacturing cost and a remarkable increase in the product quality. The manufacturing method of the round fiber-reinforced plastic strand of the present invention comprises (a) a step of continuously feeding reinforcing fiber bundles feach comprising a plurality of reinforcing fibers arranged in a direction while twisting the reinforcing fiber bundles f(b) a step of impregnating the reinforcing fiber bundles ffed continuously with a matrix resin R; and (c) a step of heating the resin-impregnated reinforcing fiber bundles fwhile tensioning to a prescribed intensity, thereby forming the reinforcing fiber bundle into a circular cross-section and hardening the resin, and manufactures a fiber-reinforced plastic strandhaving a circular cross-section.