IP Library › Granted Patent US 12,467,170
Granted Patent B2
US 12,467,170 · App. 17/437,667 · Granted Nov 11, 2025

Fiber-reinforced composite material and method for producing the same

Inventors: Taiyo Yoshioka (Tsukuba, JP); Tsunenori Kameda (Tsukuba, JP); Akimune Asanuma (Tsukuba, JP); Norihiko Fukuoka (Tsukuba, JP)
Assignees: NATIONAL AGRICULTURE AND FOOD RESEARCH ORGANIZATION; KOWA COMPANY, LTD.
D04H1/4266C08J5/045D10B2211/04D10B2401/061D10B2401/063
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Quick Facts
Patent No.
US 12,467,170
App. No.
17/437,667
Granted
Nov 11, 2025
Kind
B2
Abstract

An object of the present invention is to develop and provide a fiber-reinforced composite material having a bagworm silk thread(s) as a reinforcing fiber and being isotropic in terms of elastic modulus and strength. A fiber-reinforced composite material having nonwoven fabric(s) including bagworm silk thread as a reinforcing fiber is also provided.

Claims (6)

1 . A fiber-reinforced composite material with a sheet-like shape consisting of a polymer matrix and a nonwoven fabric consisting of at least one bagworm silk thread and an additional fiber,

wherein the additional fiber is at least one organic fiber other than bagworm silk thread, at least one inorganic fiber, and/or a combination of these fibers,

wherein the bagworm silk thread consists of at least one continuous fiber silk thread wherein the fiber-reinforced composite material is isotropic in terms of elastic modulus, strength and elongation.

2 . The fiber-reinforced composite material according to claim 1 , wherein the organic fiber is a silkworm silk thread and/or a spider thread.

3 . The fiber-reinforced composite material according to claim 1 , wherein the polymer matrix is resin, glue, starch, agar, or a combination thereof.

4 . The fiber-reinforced composite material according to claim 1 , wherein the mass percentage of the bagworm silk thread in the whole of the fiber-reinforced composite material ranges from 0.5% by mass to 50% by mass.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 19, 2022
From: YOSHIOKA, TAIYO; KAMEDA, TSUNENORI; ASANUMA, AKIMUNE; FUKUOKA, NORIHIKO
To: NATIONAL AGRICULTURE AND FOOD RESEARCH ORGANIZATION; KOWA COMPANY, LTD.
Reel/Frame 058687/0652 →
Priority Claims (1)
JP 2019-046521 · Mar 13, 2019 · national
Continuity (1)
Related Publication 20220127768A1 · Apr 28, 2022
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