ANTIFOGGING GLASS FOR A VEHICLE WINDOW, METHOD FOR PRODUCING THE SAME, AND FIXING STRUCTURE FOR THE SAME

• US 20090239017A1
• Filed: 06/03/2009
• Published: 09/24/2009
• Est. Priority Date: 12/04/2006
• Status: Abandoned Application

• Current Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Original Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Inventors: ISHIOKA, Hideki
• Application Number:
  US12/477,176
• Publication Number:
  US 20090239017A1
• Time in Patent Office: Days
• US Class Current: 428/38
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10174 Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
• CPC Class Codes: B32B 17/10348 comprising an obscuration band
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/10788 containing ethylene vinylacetate
• CPC Class Codes: B60J 1/002 with means for clear vision, e.g. anti-frost or defog panes, rain shields window heating in H05B3/84, H05B3/86

Abstract

An antifogging glass is provided which has not only an excellent antifogging property but also an excellent appearance and provides an excellent visual effect to an observer.

An antifogging glass for a vehicle window, comprising a glass sheet for a vehicle window and an antifogging film disposed on an interior side of the glass sheet, the glass sheet having a dark concealment region disposed in a band-shape on a peripheral edge portion thereof, and the antifogging film having an edge present in a position closer to a central portion of the glass sheet than an edge of the glass sheet and in the dark concealment region.

Claims

1. An antifogging glass for a vehicle window, comprising a glass sheet for a vehicle window and an antifogging film disposed on an interior side of the glass sheet, the glass sheet having a dark concealment region disposed in a band-shape on a peripheral edge portion thereof, and the antifogging film having an edge present in a position closer to a central portion of the glass sheet than an edge of the glass sheet and in the dark concealment region.

2. The antifogging glass for a vehicle window according to claim 1, wherein the glass sheet for a vehicle window is formed of a single layer glass, and the single layer glass has a dark concealment layer disposed on the peripheral edge portion of the interior side thereof to form the dark concealment region.

3. The antifogging glass for a vehicle window according to claim 1, wherein the glass sheet is formed of a laminated glass including an interior-side glass sheet, an exterior-side glass sheet and an intermediate film disposed between both glass sheets, and the interior-side glass sheet has a dark concealment layer disposed on the interior side thereof to form the dark concealment region.

4. The antifogging glass for a vehicle window according to claim 1, wherein the edge of the antifogging film is present in a region apart from an edge of the glass sheet toward an inner peripheral direction by a distance of ⅓

or more of the width of the dark concealment region disposed in a band-shape.

5. The antifogging glass for a vehicle window according to claim 1, comprising the glass sheet for a vehicle window and the antifogging film disposed on the interior side of the glass sheet, the glass sheet having a first dark concealment region disposed on the peripheral edge portion thereof, and the first dark concealment region having a second dark concealment region disposed on an inner peripheral edge portion of the first dark concealment region, the second dark concealment region having a lower degree of concealment than the first concealment region, and the edge of the antifogging film being present in the second concealment region.

6. The antifogging glass for a vehicle window according to claim 5, wherein a proportion of an area of an opaque part in the second dark concealment region to an entire area of the second dark concealment region is 1 to 99%.

7. The antifogging glass for a vehicle window according to claim 5, wherein a proportion of the area of an opaque part in the second dark concealment region increases toward the first dark concealment region.

8. The antifogging glass for a vehicle window according to claim 5, wherein the opaque part in the second dark concealment region is formed of a dot pattern.

9. The antifogging glass for a vehicle window according to claim 5, wherein the edge of the antifogging film is present in a region where a proportion of the area of the opaque part in the second dark concealment region is 30 to 80%.

10. The antifogging glass for a vehicle window according to claim 5, wherein a proportion of the area of an opaque part in the second dark concealment region is 30 to 80%.

11. The antifogging glass for a vehicle window according to claim 1, wherein the antifogging film is a film formed of an antifogging material containing a resin.

12. The antifogging glass for a vehicle window according to claim 1, wherein the antifogging film has a film thickness of 5 to 50 μ

m.

15. A method for producing an antifogging glass according to claim 1, comprising disposing a dark concealment region in the peripheral edge portion of the interior side of the glass sheet, and disposing the antifogging film so as to position the edge of the antifogging film in the dark concealment region.

13. A fixing structure for an antifogging glass for a vehicle window, which is adapted to fix an antifogging glass for a vehicle window to the flange of a window aperture in the vehicle through an adhesive, the antifogging glass having a dark concealment region disposed in a band-shape on a peripheral edge portion thereof and an antifogging film disposed on an interior side thereof, the fixing portion being covered with an interior material, the antifogging film having an edge in a position present in the dark conceal region and being not covered with an interior material.

14. The fixing structure for an antifogging glass for a vehicle window according to claim 13, wherein the glass sheet has a first dark concealment region disposed on the peripheral edge portion thereof, and the first dark concealment region has a second dark concealment region disposed on an inner peripheral edge portion of the first dark concealment region, the second dark concealment region having a lower degree of concealment than the first concealment region, and the edge of the antifogging film is present in the second concealment region.