US 11,752,690 B2
Resin composition and method for producing three-dimensionally shaped object using same
Keisuke Mizoguchi, Tokyo (JP)
Assigned to KONICA MINOLTA, INC., Tokyo (JP)
Appl. No. 16/474,188
Filed by Konica Minolta, Inc., Tokyo (JP)
PCT Filed Dec. 8, 2017, PCT No. PCT/JP2017/044160
§ 371(c)(1), (2) Date Jun. 27, 2019,
PCT Pub. No. WO2018/131352, PCT Pub. Date Jul. 19, 2018.
Claims priority of application No. 2017-003200 (JP), filed on Jan. 12, 2017.
Prior Publication US 2019/0344499 A1, Nov. 14, 2019
Int. Cl. B29C 64/153 (2017.01); B33Y 70/00 (2020.01); B29C 64/118 (2017.01); C08K 5/00 (2006.01); C08K 7/02 (2006.01); C08L 1/02 (2006.01); C08L 77/00 (2006.01); B33Y 10/00 (2015.01)
CPC B29C 64/153 (2017.08) [B29C 64/118 (2017.08); B33Y 70/00 (2014.12); C08K 5/005 (2013.01); C08K 7/02 (2013.01); C08L 1/02 (2013.01); C08L 77/00 (2013.01); B33Y 10/00 (2014.12); C08K 2201/011 (2013.01); C08L 2207/04 (2013.01)] 5 Claims
 
1. A production method for a three-dimensionally shaped object, the method comprising:
forming a thin layer from a powder material comprising a particulate resin composition, and
selectively irradiating the thin layer with laser light, thereby forming a shaped object layer comprising a plurality of the resin compositions melt-bonded to one another, wherein
the forming of the thin layer and the irradiating with the laser light are repeated a plurality of times to stack the shaped object layers, thereby shaping a three-dimensionally shaped object,
the particulate resin composition comprises resin particles containing a polysaccharide nanofiber and a thermoplastic resin,
the particulate resin composition has a content of the polysaccharide nanofiber of 1 to 70 mass %, and
the composition has a melting temperature Tm, a viscosity of the composition changes within a range of Tm −20° C. to Tm +20° C, and a maximum value of loss modulus in the range is 10 to 1,000 times a minimum value of the loss modulus in the range.