Title:
PRESS-MOLDED ARTICLE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/188873
Kind Code:
A1
Abstract:
Provided are: a molded article in which a low specific gravity and a high rigidity are both achieved, and further, wrinkles and thin spots are suppressed; and a manufacturing method therefor. To this end, provided is a press-molded article manufacturing method for performing press-molding of a sheet-shaped molding base material which is disposed in a cavity of a mold and in which reinforced fibers are dispersed at random in a matrix resin, by using a press-molding machine provided with a recessed mold for forming an opening of a molded article and a mold of a protruding part in which the cavity is formed, in correspondence to the recess, between the recessed mold and a protruding mold, and provided with a mold having at least one surface (B) in which, when pressure to be applied from the press-molding machine to a surface (A) orthogonal to the direction of pressure to be applied from the press-molding machine to the mold is 100%, the pressure to be applied is in the range of 0-70% with respect to the pressure to be applied to the surface (A), the press-molded article manufacturing method including: a shaping step (III) for applying a surface pressure of not less than 1 MPa as an external pressure from the press-molding machine to the surface (A) or the molding base material; and a pressure maintaining step (IV) for adjusting a pressure to be applied to the molding base material as an external pressure from the press-molding machine after the shaping step (III), to 0.1 MPa or less.
Inventors:
TAKEBE YOSHIKI (JP)
SHINOHARA KOTARO (JP)
HONMA MASATO (JP)
SHINOHARA KOTARO (JP)
HONMA MASATO (JP)
Application Number:
PCT/JP2019/012313
Publication Date:
October 03, 2019
Filing Date:
March 25, 2019
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B29C43/58; B29C43/34; B30B9/00; B29K105/08; B29K105/12
Domestic Patent References:
| WO2016084824A1 | 2016-06-02 | |||
| WO2014103658A1 | 2014-07-03 |
Foreign References:
| JP2010235779A | 2010-10-21 | |||
| JP2008254437A | 2008-10-23 | |||
| JP2016163989A | 2016-09-08 | |||
| JP2014069403A | 2014-04-21 | |||
| CN105269833A | 2016-01-27 | |||
| CN107471679A | 2017-12-15 | |||
| JPS5332227B1 | 1978-09-07 | |||
| JP5459005B2 | 2014-04-02 | |||
| JPH06344431A | 1994-12-20 |
Other References:
See also references of EP 3778173A4
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