Title:
METHOD FOR MANUFACTURING MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2019/189384
Kind Code:
A1
Abstract:
The present invention is a method for manufacturing a molded article having recessed/protruding sections by press forming from a molding base material (A) containing reinforcing fibers and a matrix resin, said method comprising: a step (I) for placing the molding base material (A) between molds including an upper mold and a lower mold and deforming the molding base material (A) in an in-plane direction by heating and pressing the molds; and a step (II), performed subsequent to the step (I), for deforming the molding base material (A) in an out-of-plane direction by removing pressure from the molds, wherein the ratio of deformation rates, T, indicated by expression (1) below is within the range of 0.1 to 1. (1): T=X/Z. In-plane deformation rate X={(surface area of the recessed section)/(projection area of an opening of the recessed section of the mold having the recessed section, said opening being projected in the out-of-plane direction of the molding base material (A), which was a raw material)}1/2. Out-of-plane deformation rate Z=(largest thickness of the molded article)/(thickness P of the molding base material (A)). Thickness P=(mass of the molding base material (A))/(apparent density)/(area of the molding base material (A)).
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Inventors:
SHINOHARA KOTARO (JP)
HONMA MASATO (JP)
TAKEBE YOSHIKI (JP)
HONMA MASATO (JP)
TAKEBE YOSHIKI (JP)
Application Number:
PCT/JP2019/013235
Publication Date:
October 03, 2019
Filing Date:
March 27, 2019
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B29C43/58; B29C43/34; B29C70/16; B29C70/42; B29K105/08
Domestic Patent References:
| WO2017110532A1 | 2017-06-29 |
Foreign References:
| JP2013216029A | 2013-10-24 | |||
| JP2005050948A | 2005-02-24 | |||
| JP2009196145A | 2009-09-03 | |||
| JP2014208419A | 2014-11-06 |
Other References:
See also references of EP 3778174A4
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