Title:
PRODUCTION METHOD FOR PREPREG, PREPREG TAPE, AND FIBER REINFORCED COMPOSITE MATERIAL, AND PREPREG PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/040154
Kind Code:
A1
Abstract:
Regarding a method for producing a prepreg that is obtained by applying a matrix resin to a fiber reinforced sheet, the present invention addresses the problem of providing a prepreg production method by which continuously travel can be performed without involving jamming of a generated fluff even when the travel speed is high, and by which a fiber reinforced sheet can be efficiently impregnated with a matrix resin. The present invention uses a prepreg production method comprising causing a fiber reinforced sheet to substantially, vertically downward pass through the inside of a coating part in which a matrix resin is reserved, so as to obtain a matrix resin-impregnated fiber reinforced sheet in which the matrix resin has been applied to the fiber reinforced sheet, and subsequently, heating at least the matrix resin-impregnated fiber reinforced sheet, wherein: the coating part is provided with a liquid reservoir section and a constriction section which are connected to each other; the liquid reservoir section has a portion the cross-sectional area of which continuously decreases along the travel direction of the fiber reinforced sheet; the constriction section has a slit-shaped cross section, and has a cross-sectional area smaller than that of the upper surface of the liquid reservoir section; the distance N from an outlet of the coating part to a heating start point of the matrix resin-impregnated fiber reinforced sheet is 1 m or shorter; and, at a heating end point, a surface temperature P2 (°C) of the matrix resin-impregnated fiber reinforced sheet is equal to or higher than the temperature M (°C) of the matrix resin reserved in the coating part (expression 1).
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Inventors:
OCHI TAKASHI (JP)
KONO YOSHIKAZU (JP)
NISHINO SO (JP)
AOKI JUNICHI (JP)
MINOURA KIYOSHI (JP)
SUZUKI TAMOTSU (JP)
KONO YOSHIKAZU (JP)
NISHINO SO (JP)
AOKI JUNICHI (JP)
MINOURA KIYOSHI (JP)
SUZUKI TAMOTSU (JP)
Application Number:
PCT/JP2019/032496
Publication Date:
February 27, 2020
Filing Date:
August 20, 2019
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B29B11/16; B29B15/12; B29K101/10
Domestic Patent References:
WO2013038521A1 | 2013-03-21 | |||
WO2001028951A2 | 2001-04-26 | |||
WO2012002417A1 | 2012-01-05 | |||
WO2009142231A1 | 2009-11-26 | |||
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WO2010150022A1 | 2010-12-29 | |||
WO2015076981A1 | 2015-05-28 | |||
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JPS6416612A | 1989-01-20 | |||
JP2017154330A | 2017-09-07 | |||
JP2012016857A | 2012-01-26 | |||
JPH07252372A | 1995-10-03 | |||
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Other References:
SEN-I GAKKAISHI, vol. 64, 2008, pages 262 - 267
See also references of EP 3842202A4
See also references of EP 3842202A4
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