Anti-fog mirror apparatus

Patent metadata

Field	Value
Publication number	US-2021162708-A1
Application number	US-202117171791-A
Country	US
Kind code	A1
Filing date	Feb 9, 2021
Priority date	Oct 31, 2014
Publication date	Jun 3, 2021
Grant date	—

Abstract

Described herein is a mirror apparatus comprising: a reflective substrate; and an anti-fog complex comprising: an adhesive layer atop the substrate; a first polymeric layer atop the pressure sensitive adhesive layer; and a second polymeric layer atop the first polymeric layer. Methods of making the mirror apparatus are also disclosed.

First claim

1 . A mirror apparatus having a first major surface opposite a second major surface, the mirror apparatus comprising:
a reflective substrate having an upper surface opposite a lower surface, the reflective substrate comprising:
a transparent base layer having an upper surface opposite a lower surface, the transparent base layer formed of glass;
a back coating applied to the lower surface of the transparent base layer, the back coating formed of a reflective material; and
the upper surface of the reflective substrate comprising the upper surface of the transparent base layer;
an anti-fog complex having an upper surface opposite a lower surface, the anti-fog complex comprising:
a first polymeric layer having an upper surface opposite a lower surface, the first polymeric layer comprising polymethyl methacrylate;
an adhesive layer having an upper surface opposite a lower surface, the adhesive layer formed of a pressure sensitive adhesive composition; and
the lower surface of the anti-fog complex comprising the lower surface of the adhesive layer;
wherein the reflective substrate has a thickness as measured between the upper surface and the lower surface of the reflective substrate, the thickness of the reflective substrate ranging from about 2.5 mm to about 3.5 mm; wherein the first polymeric layer has a thickness as measured between the upper surface and the lower surface of the first polymeric layer; wherein the adhesive layer has a thickness as measured between the upper surface and the lower surface of the adhesive layer, the thickness of the adhesive layer ranging from about 20 microns to about 30 microns; and wherein a ratio of the thickness of the adhesive layer to the thickness of the first polymeric layer ranges from about 0.2:1 to about 1.25:1; wherein the upper surface of the reflective substrate is adhesively bonded to the lower surface of the anti-fog complex by the adhesive layer; and wherein the first major surface of the mirror apparatus comprises the upper surface of the anti-fog complex.

2 . The mirror apparatus according to claim 1 , wherein the ratio of the thickness of the adhesive layer to the thickness of the first polymeric layer is about 0.2.

3 . The mirror apparatus according to claim 1 , wherein the thickness of the adhesive layer ranges from about 20 microns to about 25 microns.

4 . The mirror apparatus according to claim 1 , wherein the thickness of the reflective substrate ranges from about 2.75 mm to about 3.25 mm.

5 . The mirror apparatus according to claim 1 , wherein the upper surface of the reflective substrate contacts the lower surface of the adhesive layer.

6 . The mirror apparatus according to claim 1 , wherein the upper surface of the adhesive layer contacts the lower surface of the polymeric layer.

7 . The mirror apparatus according to claim 1 , wherein the first polymeric layer is thermoplastic.

8 . The mirror apparatus according to claim 1 , wherein the anti-fog complex does not contain any intervening layers between the first polymeric layer and the adhesive layer.

9 . The mirror apparatus according to claim 1 , wherein the anti-fog complex comprises sulfur-containing compounds.

10 . The mirror apparatus according to claim 1 , wherein the anti-fog complex comprises nitrogen-containing compounds.

11 . The mirror apparatus according to claim 1 , wherein the mirror exhibits a scratch/dig ratio between 120/80 and 10/5.

12 . The mirror apparatus according to claim 1 , wherein the mirror exhibits a yellow index rating greater than or equal to 4.

13 . The mirror apparatus according to claim 1 , wherein the mirror exhibits a visible light reflectance greater than 75%.

14 . The mirror apparatus according to claim 1 , wherein the second major surface of the mirror apparatus comprises the back coating.

15 . A mirror apparatus having a first major surface opposite a second major surface, the mirror apparatus comprising:
a reflective substrate having an upper surface opposite a lower surface, the reflective substrate comprising:
a transparent base layer having an upper surface opposite a lower surface, the transparent base layer formed of glass;
a back coating applied to the lower surface of the transparent base layer, the back coating formed of a reflective material; and
the upper surface of the reflective substrate comprising the upper surface of the transparent base layer;
an anti-fog matrix having an upper surface opposite a lower surface, the anti-fog matrix comprising:
an adhesive component;
a first polymeric component comprising polymethyl methacrylate;
a second polymeric component; and
wherein the reflective substrate has a thickness as measured between the upper surface and the lower surface of the reflective substrate, the thickness of the reflective substrate ranging from about 2.5 mm to about 3.5 mm; wherein the upper surface of the reflective substrate is adhesively bonded to the lower surface of the anti-fog complex by the adhesive component; and wherein the first major surface of the mirror apparatus comprises the upper surface of the anti-fog complex; and wherein at least two of the adhesive component, the first polymeric component, and the second polymeric component are present on the upper surface of the anti-fog matrix.

16 . The mirror apparatus of claim 15 , wherein the adhesive component is a pressure sensitive adhesive or a thermally activated adhesive.

17 . The mirror apparatus of claim 15 , wherein the second polymeric layer component comprises a polyurethane.

18 . The mirror apparatus according to claim 15 , wherein the thickness of the reflective substrate ranges from about 2.75 mm to about 3.25 mm.

17 . The mirror apparatus according to claim 15 , wherein the first polymeric component is thermoplastic.

18 . The mirror apparatus according to claim 15 , wherein the anti-fog complex comprises sulfur-containing compounds.

19 . The mirror apparatus according to claim 15 , wherein the anti-fog complex comprises nitrogen-containing compounds.

20 . A mirror apparatus having a first major surface opposite a second major surface, the mirror apparatus comprising:
a reflective substrate having an upper surface opposite a lower surface, the reflective substrate comprising:
a transparent base layer having an upper surface opposite a lower surface, the transparent base layer formed of glass;
a back coating applied to the lower surface of the transparent base layer, the back coating formed of a reflective material; and
the upper surface of the reflective substrate comprising the upper surface of the transparent base layer;
an anti-fog complex having an upper surface opposite a lower surface, the anti-fog complex comprising:
a first polymeric layer having an upper surface opposite a lower surface, the first polymeric layer comprising polymethyl methacrylate;
an adhesive layer having an upper surface opposite a lower surface; and
the lower surface of the anti-fog complex comprising the lower surface of the adhesive layer, and the anti-fog complex further comprising polyurethane;
wherein the reflective substrate has a thickness as measured between the upper surface and the lower surface of the reflective substrate, the thickness of the reflective substrate ranging from about 2.75 mm to about 3.25 mm; wherein the first polymeric layer has a thickness as measured between the upper surface and the lower surface of the first polymeric layer; wherein the adhesive laye

Assignees

• Mcs Industries Inc

Inventors

• Kohler Dallas Aaron

Classifications

• Y10T428/24967

  Absolute thicknesses specified · CPC title

• Y10T428/2495

  Thickness [relative or absolute] · CPC title

• B32B38/1875

  Tensioning · CPC title

• B32B37/02

  characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations · CPC title

• B32B38/10

  Removing layers, or parts of layers, mechanically or chemically · CPC title