Powder for 3D modeling, set for 3D modeling, method of manufacturing 3D object, and device for manufacturing 3D object

Patent metadata

Field	Value
Publication number	US-9708502-B2
Application number	US-201514956916-A
Country	US
Kind code	B2
Filing date	Dec 2, 2015
Priority date	Dec 18, 2014
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

A powder for 3D modeling includes a base particle and a resin having a functional group represented by the following Chemical formula 1,

where A 1 represents O or NH and R 1 , R 2 , and R 3 each, independently represent CH 3 , C 2 H 5 , C 3 H 7 , or C 4 H 9 . The base particle is covered with the resin.

First claim

What is claimed is:

1. A powder for 3D modeling comprising:
a base particle; and
a resin having a functional group represented by the following Chemical formula 1,

where A 1 represents O or NH and R 1 , R 2 , and R 3 each, independently represent CH 3 , C 2 H 5 , C 3 H 7 , or C 4 H 9 ,
wherein the base particle is covered with the resin.

2. The powder according to claim 1 , wherein the resin comprises a water soluble resin.

3. The powder according to claim 1 , wherein the resin comprises polyvinyl alcohol.

4. The powder according to claim 1 , wherein the resin comprises diacetone acrylamide-modified polyvinyl alcohol.

5. The powder according to claim 1 , wherein the resin has an average polymerization degree of from 500 to 1,700.

6. A set for 3D modeling comprising:
a powder comprising a base particle and a resin having a functional group represented by the following Chemical formula 1,

where A 1 represents O or NH and R 1 , R 2 , and R 3 each, independently represent CH 3 , C 2 H 5 , C 3 H 7 , or C 4 H 9 ; and
a solution comprising a solvent that dissolves the resin,
wherein the base particle is covered with the resin.

7. The set for 3D modeling according to claim 6 , wherein the solution comprises a compound that conducts cross-linking reaction with the functional group represented by the Chemical formula 1.

8. The set for 3D modeling according to claim 6 , wherein the resin comprises a water soluble resin and the solvent comprises water.

9. A method of manufacturing a 3D object comprising:
forming a powder layer for 3D modeling on a substrate using the powder of claim 1 ;
curing an area of the powder layer for 3D modeling by imparting a solution containing a solvent that dissolves the resin to the area; and
repeating the step of the forming and the step of curing.

10. The method of manufacturing a 3D object according to claim 9 , wherein the step of imparting is conducted by an inkjet discharging method.

11. A device for manufacturing a 3D object comprising:
a powder layer forming device to form a layer of the powder for 3D modeling of claim 1 on a substrate; and
a solution imparting device to impart a solution comprising a solvent that dissolves the resin to cure an area of the layer.

Assignees

• Naruse Mitsuru
• Tamoto Nozomu
• Suzuki Yasuo
• Iwatsuki Hitoshi
• Yamashita Yasuyuki
• Ohtaki Kazumi
• Ricoh Co Ltd

Inventors

• Naruse Mitsuru
• Tamoto Nozomu
• Suzuki Yasuo
• Iwatsuki Hitoshi
• Yamashita Yasuyuki
• Ohtaki Kazumi

Classifications

• B22F12/63

  Rollers · CPC title

• B22F12/53

  Nozzles · CPC title

• B22F10/16

  by embedding the binder within the powder bed · CPC title

• B22F1/10

  Metallic powder containing lubricating or binding agents; Metallic powder containing organic material · CPC title

• B33Y70/10

  Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials · CPC title