Invention Grant
- Patent Title: Fiber-reinforced resin molding material and molded article
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Application No.: US17280564Application Date: 2019-09-24
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Publication No.: US11746200B2Publication Date: 2023-09-05
- Inventor: Yasukazu Ono , Takafumi Hashimoto , Akira Shimoyama , Tetsuya Motohashi
- Applicant: Toray Industries, Inc.
- Applicant Address: JP Tokyo
- Assignee: Toray Industries, Inc.
- Current Assignee: Toray Industries, Inc.
- Current Assignee Address: JP Tokyo
- Agency: DLA Piper LLP (US)
- Priority: JP 18184573 2018.09.28
- International Application: PCT/JP2019/037367 2019.09.24
- International Announcement: WO2020/067058A 2020.04.02
- Date entered country: 2021-03-26
- Main IPC: C08J5/24
- IPC: C08J5/24 ; B29C70/50 ; C08K7/06

Abstract:
A fiber-reinforced resin molding material is obtained by impregnating a chopped fiber bundle with a matrix resin, has a layered structure including three or more layers in a thickness direction thereof, and satisfies the relationships Lao>Lam and Wao>Wam, where Lao and Wao represent the number average fiber length and the number average fiber bundle width, respectively, of the chopped fiber bundle in the outermost layer thereof, and Lam and Wam represent the number average fiber length and the number average fiber bundle width, respectively, of the chopped fiber bundle in a middle layer thereof.
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