Title:
POLYMER POWDER, METHOD FOR PRODUCING SAME AND METHOD FOR PRODUCING 3-DIMENSIONAL MODEL OBJECT
Document Type and Number:
WIPO Patent Application WO/2022/181633
Kind Code:
A1
Abstract:
A polymer powder composed of a polyamide, characterized in that the melting point obtained by differential scanning calorimetry is 190°C or higher, the difference between the melting point and the melting start temperature obtained by differential scanning calorimetry is less than 30°C, and the D50 particle size is 1-100 μm inclusive; a method for producing the same; and a method for producing a 3-dimensional model object through a powder bed melt bonding process using the same. The polymer powder of the present invention can maintain the powder form in a non-laser irradiated area even in a large modeling device. By using the polymer powder in the production of a model object, a model object having small warpage can be provided.
Inventors:
IWATA HIROKAZU (JP)
NAKAMURA TOMOHIKO (JP)
OKUNO YOTA (JP)
WATANABE KEI (JP)
NISHIDA MIKIYA (JP)
ASANO ITARU (JP)
NAKAMURA TOMOHIKO (JP)
OKUNO YOTA (JP)
WATANABE KEI (JP)
NISHIDA MIKIYA (JP)
ASANO ITARU (JP)
Application Number:
PCT/JP2022/007368
Publication Date:
September 01, 2022
Filing Date:
February 22, 2022
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08G69/02; B29C64/153; B29C64/314; B33Y10/00; B33Y70/00; C08G69/08; C08J3/16
Domestic Patent References:
| WO2018207728A1 | 2018-11-15 | |||
| WO2018207728A1 | 2018-11-15 |
Foreign References:
| JP2018196983A | 2018-12-13 | |||
| JP2019524939A | 2019-09-05 | |||
| JP2011518938A | 2011-06-30 |
Attorney, Agent or Firm:
BAN Toshimitsu et al. (JP)
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