Title:
PRODUCTION METHOD FOR PREPREG, PRODUCTION METHOD FOR PREPREG TAPE, AND PRODUCTION METHOD FOR FIBER REINFORCED COMPOSITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/040155
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 production method for a prepreg comprises applying a matrix resin (2) to a fiber reinforced sheet (1a) by causing the fiber reinforced sheet (1a) to pass through the inside of a coating part (20) in which the matrix resin (2) is reserved, and further performing spray coating or curtain coating of discharging a liquid to a primary prepreg (1c) drawn out from the coating part (20), wherein: the coating part (20) 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 (1a); and 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.
Inventors:
OCHI TAKASHI (JP)
NISHINO SO (JP)
AOKI JUNICHI (JP)
NISHINO SO (JP)
AOKI JUNICHI (JP)
Application Number:
PCT/JP2019/032497
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:
| WO2013008720A1 | 2013-01-17 |
Foreign References:
| JPH01178411A | 1989-07-14 | |||
| JPH01178412A | 1989-07-14 | |||
| JP2008050587A | 2008-03-06 | |||
| JP2011144213A | 2011-07-28 | |||
| JP2016147925A | 2016-08-18 | |||
| JPH05200747A | 1993-08-10 | |||
| JP2005066962A | 2005-03-17 | |||
| JP2010540297A | 2010-12-24 | |||
| EP0976515A1 | 2000-02-02 |
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