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Title:
PREPREG MANUFACTURING METHOD AND MANUFACTURING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/040153
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a prepreg manufacturing method and manufacturing apparatus that suppress the generation of fluff, enable continuous production without clogging by fluff, ensure uniform application of a coating liquid to a reinforcing fiber sheet and efficient impregnation, and make it possible to increase the production speed. The main purpose of the present invention is the prepreg manufacturing apparatus that applies a coating liquid to a reinforcing fiber sheet, and that comprises: a coating unit including a liquid reservoir portion in which the coating liquid is stored and which has a portion with a cross-sectional area continuously decreasing downward in the vertical direction, and a narrowed section having a slit-shaped outlet communicating with the lower end of the liquid reservoir portion; a traveling mechanism that causes the reinforcing fiber sheet to travel vertically downward and loads the reinforcing fiber sheet into the coating unit; a pull-out mechanism that pulls the reinforcing fiber sheet downward from the coating unit; a wall surface member that forms a narrowed section facing the thickness direction of the reinforcing fiber sheet; and an external force applying mechanism that applies an external force in the thickness direction of the reinforcing fiber sheet to the wall surface member.

Inventors:
NISHINO SO (JP)
KONO YOSHIKAZU (JP)
OCHI TAKASHI (JP)
AOKI JUNICHI (JP)
KITAMURA YOSHIYUKI (JP)
MINOURA KIYOSHI (JP)
Application Number:
PCT/JP2019/032495
Publication Date:
February 27, 2020
Filing Date:
August 20, 2019
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B29B11/16; B29B15/12; B29K101/10
Domestic Patent References:
WO2013038521A12013-03-21
WO2001028951A22001-04-26
WO2012002417A12012-01-05
WO2009142231A12009-11-26
WO2015060299A12015-04-30
WO2010150022A12010-12-29
WO2015076981A12015-05-28
WO2017068159A12017-04-27
WO2011118106A12011-09-29
Foreign References:
JPH01178412A1989-07-14
JPH01178411A1989-07-14
JP2018507801A2018-03-22
JPS4930453A1974-03-18
JP2000000896A2000-01-07
CN101913253A2010-12-15
JPH0631821A1994-02-08
JPH01178412A1989-07-14
JPH01104624A1989-04-21
JP2015022799A2015-02-02
JP2011132389A2011-07-07
JP2016203397A2016-12-08
JP2017154330A2017-09-07
JP2013022868A2013-02-04
Other References:
SEN-I GAKKAISHI, vol. 64, 2008, pages 262 - 267
See also references of EP 3842204A4
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