Title:
POWDER COMPOSITION, METHOD FOR PRODUCING THREE-DIMENSIONALLY SHAPED ARTICLE BY POWDER BED MELT BONDING PROCESS USING POWDER COMPOSITION, AND THREE-DIMENSIONALLY SHAPED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2023/286824
Kind Code:
A1
Abstract:
Provided are: a powder composition comprising a polyamide powder (A) and an inorganic reinforcing material (B), in which the polyamide powder (A) has a D50 particle diameter of 1 to 100 μm inclusive and a sphericity of 80 to 100 inclusive, the inorganic reinforcing material (B) has an average major axis diameter of 3 to 300 μm inclusive and an (average major axis diameter)/(average minor axis diameter) ratio of 1 to 15 inclusive, and the inorganic reinforcing material (B) is contained in an amount of 5 to 60% by weight inclusive relative to the whole weight of the powder composition; a method for producing a three-dimensionally shaped article by a powder bed melt bonding process using the powder composition; and a three-dimensionally shaped article. The powder composition comprises a specific polyamide powder and a specific inorganic reinforcing material, and therefore has high fluidability and can keep the fluidability thereof at a satisfactory level when recycled and used. When the powder composition is used for three-dimensional shaping, a shaped article having both of surface smoothness and high elastic modulus can be produced.
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Inventors:
NAKAMURA TOMOHIKO (JP)
IWATA HIROKAZU (JP)
MATSUMOTO SATOSHI (JP)
WATANABE KEI (JP)
KURATA MITSURU (JP)
NISHIDA MIKIYA (JP)
YOSHIKAWA TAKAHIRO (JP)
ASANO ITARU (JP)
IWATA HIROKAZU (JP)
MATSUMOTO SATOSHI (JP)
WATANABE KEI (JP)
KURATA MITSURU (JP)
NISHIDA MIKIYA (JP)
YOSHIKAWA TAKAHIRO (JP)
ASANO ITARU (JP)
Application Number:
PCT/JP2022/027661
Publication Date:
January 19, 2023
Filing Date:
July 14, 2022
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08G69/00; B29C64/153; B29C64/165; B29C64/314; B33Y10/00; B33Y70/10; B33Y80/00; C08K3/013; C08L77/00
Domestic Patent References:
| WO2021090768A1 | 2021-05-14 |
Foreign References:
| JP2020536153A | 2020-12-10 | |||
| JP2018196983A | 2018-12-13 | |||
| JP2021053887A | 2021-04-08 | |||
| JP2022015603A | 2022-01-21 | |||
| JP2008266645A | 2008-11-06 | |||
| JP2020536153A | 2020-12-10 |
Attorney, Agent or Firm:
BAN Toshimitsu et al. (JP)
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