Three-dimensional object forming liquid, three-dimensional object forming liquid set, three-dimensional object producing method, and three-dimensional object

Patent metadata

Field	Value
Publication number	US-10557018-B2
Application number	US-201816024938-A
Country	US
Kind code	B2
Filing date	Jul 2, 2018
Priority date	Oct 16, 2014
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

Provided is a three-dimensional object producing method, including: a first step of forming a film by delivering a first liquid as a hydrogel precursor including at least a multifunctional monomer; and a second step of curing the film formed in the first step, wherein the first step and the second step are repeated a plurality of times.

First claim

What is claimed is:

1. A three-dimensional object forming liquid,
wherein the three-dimensional object forming liquid is a hydrogel precursor that comprises a multifunctional monomer, and
wherein a viscosity of the three-dimensional object forming liquid is from 3 mPa·s to 20 mPa·s at 25° C., and an 80% strain compressive stress of a hydrogel obtained by curing the three-dimensional object forming liquid is 0.4 MPa or greater.

2. A three-dimensional object forming liquid set, comprising:
a first liquid that is the three-dimensional object forming liquid according to claim 1 ; and
a second liquid that comprises a hydrogel precursor and is compositionally different from the three-dimensional object forming liquid.

3. A three-dimensional object produced by a three-dimensional object producing method comprising:
forming of a film by delivering a first liquid;
another forming of a film by delivering a second liquid to a different position from where the first liquid is delivered; and
curing of the films formed in the forming and the another forming respectively,
wherein the forming, the another forming, and the curing are repeated a plurality of times, and
wherein the first liquid and the second liquid are cured to hydrogels different from each other in elastic modulus,
the three-dimensional object comprising:
a first region made of a first hydrogel; and
a second region made of a second hydrogel different from the first hydrogel in elastic modulus,
wherein an 80% strain compressive stress of any one of the first hydrogel and the second hydrogel is 0.4 MPa or greater.

4. The three-dimensional object according to claim 3 ,
wherein compressive elastic modulus of any one of the first hydrogel and the second hydrogel is 0.3 MPa or greater.

5. The three-dimensional object according to claim 3 ,
wherein the first region encloses the second region therein completely.

6. The three-dimensional object according to claim 3 ,
wherein the hydrogels are hydrogels that comprise water in a three-dimensional network structure formed by a water-soluble organic polymer and dispersed single layers of a layered mineral being combined with each other.

7. An organ model,
wherein the organ model is the three-dimensional object according to claim 3 .

Assignees

• Norikane Yoshihiro
• Fujii Ichiroh
• Iwata Hiroshi
• Ricoh Co Ltd

Inventors

• Norikane Yoshihiro
• Fujii Ichiroh
• Iwata Hiroshi

Classifications

• B29C64/112

  using individual droplets, e.g. from jetting heads · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title

• C08K5/41 Primary

  Compounds containing sulfur bound to oxygen · CPC title

• B29L2031/7532

  Artificial members, protheses · CPC title

• B29C64/124

  using layers of liquid which are selectively solidified · CPC title