Title:
FIBER-REINFORCED RESIN SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/182409
Kind Code:
A1
Abstract:
The present invention provides: a fiber-reinforced resin sheet that exhibits a higher tensile strength; and a method for manufacturing said fiber-reinforced resin sheet. The fiber-reinforced resin sheet comprises: multiple reinforcing fibers that are arranged so as to be oriented in one direction; and a thermoplastic resin with which the reinforcing fibers are impregnated. A variation coefficient of the standard deviation of orientation angles of the multiple reinforcing fibers is 17.0% or less. The fiber-reinforced resin sheet is produced by a method that involves impregnating multiple reinforcing fibers arranged so as to be oriented in one direction with a thermoplastic resin, and, by using a cooling roller, cooling the fibers while applying pressure thereon, and that satisfies at least two of conditions (1)-(3). (1) The multiple reinforcing fibers are to be impregnated with the resin while being subjected to a tensile force of 800-2000 cN.
(2) Cooling while applying pressure is to be performed by causing a cooling roller to apply a pressing pressure of 1.0-6.0 bar.
(3) Cooling while applying pressure is to be performed by a cooling roller that has undergone a release treatment.
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Inventors:
TANAKA TOSHIHIRO
MIYATA ATSUSHI
NAKAYAMA KENTARO
MIYATA ATSUSHI
NAKAYAMA KENTARO
Application Number:
PCT/JP2023/011424
Publication Date:
September 28, 2023
Filing Date:
March 23, 2023
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
B29C70/50; B29B11/16; B29C70/20
Domestic Patent References:
| WO2019017057A1 | 2019-01-24 | |||
| WO2017180784A1 | 2017-10-19 |
Foreign References:
| JP2015016665A | 2015-01-29 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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