Title:
METHOD FOR MANUFACTURING STRUCTURE AND STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/039637
Kind Code:
A1
Abstract:
Provided are a method for manufacturing a structure and a structure, the structure being made of FRP and achieving a high degree of freedom in cross-sectional shape even at low cost. The method for manufacturing a structure comprises: a winding step for winding multiple sheets of composite material around a hollow cylindrical core material CY to form a tubular laminate LM, the composite material including reinforcement fiber and an uncured thermosetting resin; a compressing step for winding a tape TP or a film on the outer circumference of the laminate LM to compress the laminate LM; a preliminary heating step for heating the laminate LM to a state in which the thermosetting resin is not completely cured; and a main heating step for heating the laminate LM until the thermosetting resin is completely cured while transforming the cylindrical core material CY into a non-circular cross-sectional shape by disposing the laminate LM and the cylindrical core material CY with the tape TP or the film wound therearound in a mold and applying pressure to the mold. As a result, it is possible to form a structure in which the cylindrical core material CY and the laminate LM are integrated.
Inventors:
MATSUMOTO KEIZO (JP)
MATSUZAKI YUICHIRO (JP)
TSUJIMOTO RYUTA (JP)
MATSUZAKI YUICHIRO (JP)
TSUJIMOTO RYUTA (JP)
Application Number:
PCT/JP2020/031651
Publication Date:
March 04, 2021
Filing Date:
August 21, 2020
Export Citation:
Assignee:
GRAPHITE DESIGN INC (JP)
International Classes:
B29D23/00; B29C53/60; B29C70/08; B29C70/30; B29C70/46; B29L23/00
Foreign References:
| JP2015127386A | 2015-07-09 | |||
| JPS63193811A | 1988-08-11 | |||
| JP2000062032A | 2000-02-29 | |||
| JPH07276521A | 1995-10-24 | |||
| JP2007030273A | 2007-02-08 | |||
| JPS5872417A | 1983-04-30 | |||
| JP2006159457A | 2006-06-22 |
Other References:
"MST Technical Document: No. C0220", 20 October 2011, FOUNDATION: MATERIAL FOUNDATION FOR SCIENCE AND TECHNOLOGY, article "Survey of Curing Temperature and Glass-Transition Temperature of Epoxy-Resins"
See also references of EP 4023422A4
See also references of EP 4023422A4
Attorney, Agent or Firm:
Patent Corporate Body Dai-ichi Kokusai Tokkyo Jimusho (JP)
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