Printing material for three-dimensional printing apparatus

Patent metadata

Field	Value
Publication number	US-10428164-B2
Application number	US-201715475092-A
Country	US
Kind code	B2
Filing date	Mar 30, 2017
Priority date	Feb 16, 2017
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A printing material for a three-dimensional (3D) printing apparatus is provided. The printing material includes a core and a shell covering the core, wherein the Shore hardness of the core is A45-A90, the Shore hardness of the shell is D40-D85, the Shore hardness of the shell is higher than the Shore hardness of the core, the volume percentage of the shell is 10% to 30%, and the volume percentage of the core is 70% to 90%. Since the printing material has a specific structure, feed abnormality during the printing material passing through a narrow inlet hole and guide tube may be prevented in the use of low-hardness material as the core.

First claim

What is claimed is:

1. A printing material for a three-dimensional printing apparatus, comprising:
a wire comprising a core and a shell;
wherein a Shore hardness of the core is A45-A90;
the shell covers the core, wherein a Shore hardness of the shell is D40-D85, and the Shore hardness of the shell is higher than the Shore hardness of the core;
a volume percentage of the shell is 10% to 30%, and a volume percentage of the core is 70% to 90%,
wherein the wire has a diameter of 1.7 mm to 3.1 mm.

2. The printing material of claim 1 , wherein the Shore hardness of the core is A60-A85.

3. The printing material of claim 1 , wherein the Shore hardness of the shell is D65-D80.

4. The printing material of claim 1 , wherein the core comprises a thermoplastic elastomer comprising a polyether ester elastomer, a styrene-butadiene-styrene block copolymer, a styrene-ethylene/butylene-styrene block copolymer, a polyolefin elastomer, polyurethane, or a combination thereof.

5. The printing material of claim 1 , wherein the shell comprises a thermoplastic elastomer comprising a polyether ester elastomer, a styrene-butadiene-styrene block copolymer, a styrene-ethylene/butylene-styrene block copolymer, a polyolefin elastomer, polyurethane, or a combination thereof.

Assignees

• Xyzprinting Inc
• Kinpo Elect Inc

Inventors

• Wang Kuo-Hsiung
• Peng Chun-Wei

Classifications

• C08L75/04 Primary

  Polyurethanes · CPC title

• C08F10/00 Primary

  Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond · CPC title

• B33Y70/00

  Materials specially adapted for additive manufacturing · CPC title

• B29C64/00

  Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering · CPC title

• B29K2021/003

  Thermoplastic elastomers · CPC title