Automotive glazing with anti-fingerprint coating

Patent metadata

Field	Value
Publication number	US-2022402256-A1
Application number	US-202017774334-A
Country	US
Kind code	A1
Filing date	Nov 5, 2020
Priority date	Nov 5, 2019
Publication date	Dec 22, 2022
Grant date	—

Abstract

Due to the increased glazed area of modern vehicles, especially the large panoramic glass roofs, we have seen a substantial growth in the use of anti-reflective coatings. Unfortunately, these types of coatings accentuate fingerprints and smudges. The invention provides an automotive glazing which is substantially resistant to fingerprints, and a method of manufacture thereof through the application of an anti-fingerprint coating based on low surface energy silanes.

First claim

What is claimed is:

1 . An automotive glazing comprising:
at least one glass layer having two oppositely disposed major faces, wherein one of these two major faces is an interior face which comprises a portion of the interior surface of a vehicle cabin when installed as a window in a vehicle; and an anti-fingerprint coating applied on the interior face of said at least one glass layer; wherein the anti-fingerprint coating is a low surface-energy silane-based coating.

2 . The automotive glazing of claim 1 , wherein the glazing is a monolithic tempered glazing.

3 . The automotive glazing of claim 1 , wherein the glazing is a laminated glazing.

4 . The automotive glazing of claim 1 , wherein the glazing is a roof glazing.

5 . The automotive glazing of claim 1 , wherein said at least one glass layer is at least two glass layers, outer glass layer and inner glass layer; wherein the anti-fingerprint coating is applied on the interior face of the inner glass layer; and wherein the automotive glazing further comprises a plastic bonding layer placed between the outer and inner glass layers.

6 . The automotive glazing of claim 1 wherein the total visible light transmission is less than 20%, preferably less than 10%, more preferably less than 5%.

7 . The automotive glazing of claim 1 wherein the total visible light reflection is less than 2%, preferably less than 1%.

8 . The automotive glazing of claim 5 wherein the thickness of the inner glass layer is less than 1.0 mm.

9 . The automotive glazing of claim 5 , wherein the inner glass layer is cold bent.

10 . The automotive glazing of claim 1 further comprising an anti-reflective coating applied on the interior face of said at least one glass layer, wherein the anti-fingerprint is disposed over the anti-reflective coating.

11 . A method for producing an automotive glazing comprised of a least one glass layer having two oppositely disposed major faces, wherein one of these two major faces is an interior face which comprises a portion of the interior surface of a vehicle cabin when installed as a window in a vehicle; and an anti-fingerprint coating, the method comprising the steps of:
cleaning the interior face of said at least one glass layer such that substantially all contaminates, debris and other undesirable elements are removed from said face; subjecting the interior face of said at least one glass layer to a plasma surface activation treatment; applying a low surface-energy silane-based coating to at least a portion of the interior face of said at least one glass layer; and heating said at least one glass layer to a temperature range and for a duration sufficient to cure the coating.

12 . The method of claim 11 , wherein the method is integrated as an in-line part of the glass bending process.

13 . The method of claim 11 , wherein the step of applying a low surface-energy silane-based coating comprises atomizing the solution of low surface-energy silanes via spray means.

14 . The method of claim 11 further comprising the step of: applying an anti-reflective coating to at least a portion of the interior face of said at least one glass layer.

15 . The method of claim 11 , wherein the coating is cured during the lamination and autoclave process.

16 . The method of claim 11 , wherein in the step of heating, the temperature range is from 50° C. to 150° C. for a period from 10 minutes to 12 hours.

17 . The method of claim 11 , wherein the step of applying a low surface-energy silane-based coating is carried out after bending said at least one glass layer.

18 . The method of claim 11 , wherein the step of applying a low surface-energy silane-based coating is carried out before cold bending said at least one glass layer.

Assignees

• Agp America Sa

Inventors

• Mannheim Astete Mario Arturo
• De Oliveira Allan
• Nuñez-Regueiro José
• Michetti Massimo
• Temoche Eduardo D
• Wang Zhaoyu

Classifications

• B32B2307/102

  Insulating · CPC title

• B32B17/10229

  Metallic layers sandwiched by dielectric layers · CPC title

• B32B17/10853

  the membrane being bag-shaped · CPC title

• B32B17/10201

  Dielectric coatings · CPC title

• B32B17/10036

  comprising two outer glass sheets · CPC title