Fireproofing article and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10486003-B2
Application number	US-201715482295-A
Country	US
Kind code	B2
Filing date	Apr 7, 2017
Priority date	Apr 7, 2017
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

This invention relates to a fireproofing article and the method of manufacturing the same. The fireproofing article comprises an external portion and an inner portion. The external portion defines external surfaces of the fireproofing article that are exposed to the environment. The inner portion is formed inside of the external portion. The external portion and the inner portion are both porous and made of a fireproofing material. The external portion has a first material density and the inner portion has a second material density. The first material density is less than the second material density. The method of manufacturing a fireproofing article comprises forming the fireproofing article with a fireproofing material through 3D printing; wherein the fireproofing article formed is porous.

First claim

What is claimed is:

1. A fireproofing article, comprising:
an external portion defining external surfaces of the fireproofing article, wherein the external surfaces are exposed to an environment; and
an inner portion inside the external portion, wherein
the external portion and the inner portion are porous,
the external portion and the inner portion comprise a fireproofing material,
the external portion has a first material density,
the inner portion has a second material density,
the first material density is less than the second material density, and
the external portion and the inner portion include a structure having a plurality of hollow polygonal prisms.

2. The fireproofing article as in claim 1 , wherein the plurality of hollow polygonal prisms is one of triangular prisms, rectangular prisms, pentagonal prisms, hexagonal prisms, or a combination of any two of the triangular prisms, the rectangular prisms, the pentagonal prisms, or the hexagonal prisms.

3. The fireproofing article as in claim 1 , wherein the structure is a uniformly formed hexagonal honeycomb structure.

4. The fireproofing article as in claim 1 , wherein the fireproofing article is a 3D printed article.

5. The fireproofing article as in claim 1 , wherein
the fireproofing material is expandable in volume in a burning state, and
a portion of the fireproofing material is carbonizable in the burning state.

6. The fireproofing article as in claim 1 , wherein the fireproofing material contains at least one of flame retardants of Sulfonated Polystyrene derivatives, flame retardants of alkaline metal salts of Sulfonated Polystyrene derivatives, phosphate flame retardants, or nitrogen flame retardants.

7. The fireproofing article as in claim 1 , wherein the fireproofing material is recyclable.

8. The fireproofing article as in claim 1 , wherein the first material density of the external portion ranges from 10 to 60% in volume.

9. The fireproofing article as in claim 8 , wherein the first material density of the external portion is 10% in volume.

10. The fireproofing article as in claim 1 , wherein the second material density of the inner portion ranges from 15 to 100% in volume.

11. The fireproofing article as in claim 10 , wherein the second material density of the inner portion is 60% in volume.

12. The fireproofing article as in claim 1 , wherein the external portion has a thickness of 0.5 cm or more.

Assignees

• Sony Corp

Inventors

• Cheng Yih-Lin
• Chen Freeman
• Yang Yu-Kai

Classifications

• 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

• B29L2031/608

  Honeycomb structures · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B29K2105/0026

  Flame proofing or flame retarding agents · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title