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:
Nov. 13, 2012
Filed:
Mar. 24, 2009
Hideki Kawashiri, Toyota, JP;
Hideki Kawashiri, Toyota, JP;
Toyota Boshoku Kabushiki Kaisha, Aichi, JP;
Abstract
The object of the present invention is to provide a method for producing a composite plant fiber material capable of achieving both of higher lightweight and better mechanical characteristics. The method of producing a composite plant fiber material having a structure wherein plant fibers (kenaf fibers, etc.) are bonded together via a thermoplastic resin (a polypropylene-based resin, etc.) and containing 30% to 95% by weight of the plant fibers referring the total amount of plant fibers and thermoplastic resin as to 100% by weight, which comprises, in this order, a spinning process for melt-spinning a thermoplastic resin (a polypropylene-based resin) containing an acid-modified thermoplastic resin (maleic anhydride-modified polypropylene, etc.) to give thermoplastic resin fibers; a fiber-mixing process for combining plant fibers (kenaf fibers, etc.) with the thermoplastic resin fibers to give a fiber mixture; and a heating process for melting the thermoplastic resin fibers in the fiber mixture.