Laminated glass for window and glass window member

• US 8,658,283 B2
• Filed: 05/13/2008
• Issued: 02/25/2014
• Est. Priority Date: 05/14/2007
• Status: Active Grant

• Current Assignee: Nippon Electric Glass Company Limited
• Original Assignee: Nippon Electric Glass Company Limited
• Inventors: Shimatani, Narutoshi
• Primary Examiner(s): Ruthkosky, Mark
• Assistant Examiner(s): Powers, Laura C
• Application Number:
  US12/594,644
• Publication Number:
  US 20100151210A1
• Time in Patent Office: 2,114 Days
• Field of Search: 428/426, 428/195.1, 428/215
• US Class Current: 428/426
• CPC Class Codes: A47F 3/0434 Glass or transparent panels
• CPC Class Codes: B32B 17/10045 with at least one intermediate layer consisting of a glass sheet
• CPC Class Codes: B32B 17/10119 having a composition deviating from the basic composition of soda-lime glass, e.g. borosilicate
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/10788 containing ethylene vinylacetate
• CPC Class Codes: Y10T 428/24777 Edge feature
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24967 Absolute thicknesses specified

Abstract

A laminated glass for windows has a multilayer structure, wherein plural sheets of glass are laminated through a resin layer. The sheet glasses are made of an alkali-free borosilicate glass. Each sheet glass has a thickness of 1 mm or less, and the total thickness of the sheet glasses is 2 to 10 mm.

Claims

1. A laminated glass for windows comprising 3 to 10 glass sheets laminated via a resin layer,

wherein two of the glass sheets constitute front and back surfaces of the laminated glass, respectively, and at least one of the glass sheets constituting the front and back surfaces of the laminated glass is made of an alkali-free borosilicate glass which comprises, expressed in terms of oxides by mass %, 60% or more of SiO₂+B₂O₃ and 1% or less of Na₂O+K₂O+Li₂O,

wherein a thickness of each of the glass sheets is 1 mm or less, and a total thickness of a total number of the glass sheets is 2 to 10 mm, and

wherein the laminated glass has a Young'"'"'s modulus of 20 GPa or less.

2. The laminated glass for windows according to claim 1, wherein the resin layer is made of a thermoplastic resin, and has a thickness of 0.1 to 2 mm.

3. A glass window member, comprising:

the laminated glass for windows according to claim 1; and

a support member provided at an end of the laminated glass for windows.

4. The glass window member according to claim 3, wherein the support member comprises one or more materials selected from the group consisting of plastic, rubber, rock, metal, glass, glass ceramics, and woods.

5. The glass window member according to claim 3, further comprising a coating film formed on at least one of the front and back surfaces of the laminated glass for windows.

6. The glass window member according to claim 3, which is used as a window member for a showcase.

7. A glass window member, comprising:

the laminated glass for windows according to claim 2; and

a support member provided at an end of the laminated glass for windows.

8. The glass window member according to claim 4, further comprising a coating film formed on at least one of the front and back surfaces of the laminated glass for windows.

9. The glass window member according to claim 7, further comprising a coating film formed on at least one of the front and back surfaces of the laminated glass for windows.

10. The glass window member according to claim 4, which is used as a window member for a showcase.

11. The glass window member according to claim 5, which is used as a window member for a showcase.

12. The glass window member according to claim 7, which is used as a window member for a showcase.

13. The laminated glass for windows according to claim 1, wherein all of the glass sheets of the laminated glass are made of the alkali-free borosilicate glass.