Three-dimension formation composition, method of manufacturing three-dimensional structure, and three-dimensional structure

Patent metadata

Field	Value
Publication number	US-9765193-B2
Application number	US-201515112050-A
Country	US
Kind code	B2
Filing date	Jun 30, 2015
Priority date	Jul 1, 2014
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

There are provided a method of manufacturing a three-dimensional structure, and three-dimension formation composition, by each which a three-dimensional structure can be manufactured with high dimensional accuracy, and provided a three-dimensional structure manufactured with high dimensional accuracy.
There is provided a method of manufacturing a three-dimensional structure, in which the three-dimensional structure is manufactured by laminating a layer, the method including: forming the layer using a three-dimension formation composition containing particles, a binding resin, and a water-based solvent; removing the water-based solvent from the layer by heating the layer; and applying a binding solution containing a binder to the layer, in which the binding resin has an ammonium salt of a carboxyl group as a functional group.

First claim

The invention claimed is:

1. A three-dimension formation composition, comprising:
particles;
a binding resin; and
a water-based solvent,
wherein the binding resin has an ammonium salt of a carboxyl group as a functional group, and
the weight average molecular weight of the binding resin is 50000 to 200000.

2. The three-dimension formation composition according to claim 1 ,
wherein the binding resin contains one or two or more selected from the group consisting of a reaction product of an olefin-maleic anhydride copolymer with ammonia, a polyacrylic acid ammonium salt, an ammonium salt of carboxymethyl cellulose, a polystyrene carboxylic acid ammonium salt, an ammonium salt of an acrylamide-acrylic acid copolymer, and an alginic acid ammonium salt.

3. The three-dimension formation composition according to claim 1 ,
wherein the binding resin has a structure of acid anhydride which is formed by heating.

4. The three-dimension formation composition according to claim 1 ,
wherein the binding resin has a cyclic chemical structure which is formed by heating.

5. The three-dimension formation composition according to claim 4 ,
wherein the binding resin has a five-membered or six-membered cyclic structure which is formed by heating.

6. The three-dimension formation composition according to claim 1 ,
wherein the binding resin has an amide group (—CONH 2 ) together with the ammonium salt of a carboxyl group in a molecule.

7. The three-dimension formation composition according to claim 1 , further comprising:
a compound having an amide group (—CONH 2 ) in addition to the binding resin.

8. The three-dimension formation composition according to claim 7 ,
wherein the compound having an amide group is polyacrylamide.

9. A method of manufacturing a three-dimensional structure, in which the three-dimensional structure is manufactured by laminating a layer, the method comprising:
forming the layer using a three-dimension formation composition containing particles, a binding resin, and a water-based solvent;
removing the water-based solvent from the layer by heating the layer; and
applying a binding solution containing a binder to the layer,
wherein the binding resin has an ammonium salt of a carboxyl group as a functional group.

10. The method of manufacturing a three-dimensional structure according to claim 9 ,
wherein, in the removing of the water-based solvent, the layer is heated to a temperature equal to or higher than the glass transition temperature of the binding resin.

11. The method of manufacturing a three-dimensional structure according to claim 9 ,
wherein, in the removing of the water-based solvent, the heating temperature is 30 degrees Celsius to 140 degrees Celsius.

12. The method of manufacturing a three-dimensional structure according to claim 9 , further comprising:
removing the particles, which are not bound by the binder, after repeating the forming of the layer, the removing of the water-based solvent, and the applying of the binding solution,
wherein the pH of a removing solution used in the removing of the unbound particles is 9 or more.

13. The method of manufacturing a three-dimensional structure according to claim 9 , further comprising:
removing the particles, which are not bound by the binder, after repeating the forming of the layer, the removing of the water-based solvent, and the applying of the binding solution,
wherein, in the removing of the unbound particles, ammonia is used.

14. A three-dimensional structure, which is manufactured by the method of manufacturing a three-dimensional structure according to claim 9 .

Assignees

• Seiko Epson Corp

Inventors

• Hirata Koki
• Fukumoto Hiroshi
• Kato Shinichi
• Sato Chigusa

Classifications

• C08J2307/00

  Characterised by the use of natural rubber · CPC title

• C08K3/36

  Silica · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B29C71/0009

  using liquids, e.g. solvents, swelling agents (spectacle cases, e.g. for cleaning contact lenses A45C11/04; disinfecting or sterilising contact lenses A61L12/00, using liquid substances A61L2/20; cleaning involving the use of liquid in general B08B3/00; for hydrating contact lenses B29D11/00067) · CPC title

• B29C64/40

  Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof · CPC title