Powder material for three-dimensional modeling, kit for three-dimensional modeling, device for manufacturing three-dimensional object, and method of manufacturing three-dimensional object

Patent metadata

Field	Value
Publication number	US-9782935-B2
Application number	US-201615065161-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	Mar 18, 2015
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

A powder material for three-dimensional modeling includes a base particle and a coverage film including an organic material. The coverage film covers the base particle. The powder material is used for three dimensional modeling and when the coverage film is dissolved in a solvent to prepare a solution and the solution is formed into a coated film on a smooth surface, the coated film has a wetting tension of from 22 mN/m to 28 mN/m.

First claim

What is claimed is:

1. A powder material for three-dimensional modeling comprising:
a base particle; and
a coverage film including an organic material, the coverage film covering the base particle,
wherein the powder material is used for three dimensional modeling and when the coverage film is dissolved in a solvent to prepare a solution and the solution is formed into a coated film on a smooth surface, the coated film has a wetting tension of from 22 mN/m to 28 mN/m.

2. The powder material according to claim 1 , wherein the coverage film includes at least one surfactant, which includes a fluorine-containing compound.

3. The powder material according to claim 2 , wherein the fluorine-containing compound accounts for 0.001 percent by mass to 5 percent by mass of the coverage film.

4. The powder material according to claim 1 , wherein the organic material includes a polyvinyl alcohol resin.

5. The powder material according to claim 1 , wherein the organic material includes a polyvinyl alcohol resin modified by an acetoacetyl group.

6. The powder material according to claim 1 , wherein the base particle includes at least one of a metal particle and a ceramic particle.

7. A kit for three dimensional modeling comprising:
the powder material of claim 1 ; and
a modeling liquid including an aqueous medium and a cross-linking agent to cross-link with the organic material.

8. A device for manufacturing a three-dimensional object comprising:
a powder material layer forming device to form a layer of the powder material of claim 1 ; and
a modeling liquid applying device to apply a modeling liquid to an area in the layer, the modeling liquid including an aqueous medium and a cross-linking agent to cross-link with the organic material, to cross-link and cure the area;
a powder material containing unit containing the powder material; and
a modeling liquid containing unit containing the modeling liquid.

9. A method of forming a three-dimensional object comprising:
forming a layer of the powder material of claim 1 ;
applying a modeling liquid to an area in the layer, the modeling liquid including an aqueous medium and a cross-linking agent to cross-link with the organic material, to cure and cross-link the area; and
repeating the forming and the applying to manufacture the three-dimensional object.

Assignees

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

Inventors

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

Classifications

• C09D129/04

  Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids · CPC title

• C04B35/00

  Shaped ceramic products characterised by their composition {(porous ceramic products C04B38/00; ceramic articles characterised by particular shape, see the relevant classes, e.g. linings for casting ladles, tundishes, cups or the like B22D41/02; ceramic substrates for microelectronic semi-conductors H10W70/692)}; Ceramics compositions ({shaping of ceramics B28B;} containing free metal bonded to carbides, diamond, oxides, borides, nitrides, silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides or sulfides other than as macroscopic reinforcing agents C22C); Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products {(infiltration of sintered ceramic preforms with molten metal C04B41/51; chemical preparation of powders of inorganic compounds C01)} · CPC title

• B29C64/165 Primary

  using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber · CPC title

• B22F3/003

  Apparatus, e.g. furnaces (in general F27B) · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title