# US 10,870,262 B2 · Laminated glass

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- Number: US 10,870,262 B2
- Document ID: US10870262B2
- Status: Granted
- Kind: B2
- Application number: 16/000,022
- Filed: 2018-06-05
- Published: 2018-10-04
- Granted: 2020-12-22
- Earliest claimed: 2015-12-09
- Assignees: AGC Inc.
- Applicants: AGC Inc.
- Inventors: Tokihiko Aoki
- Web page: https://patentgrep.com/patent/US10870262B2

## CPC

- B32B 17/10036: {comprising two outer glass sheets}
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 17/10302: {Edge sealing}
- B32B 17/10348: {comprising an obscuration band}
- B32B 17/10431: {Specific parts for the modulation of light incorporated into the laminated safety glass or glazing}
- B32B 17/10532: {Suspended particle layer}
- B32B 17/10743: {containing acrylate (co)polymers or salts thereof}
- B32B 17/1077: {containing polyurethane}
- B32B 17/10779: {containing polyester}
- B32B 17/10788: {containing ethylene vinylacetate}
- B32B 27/20: using fillers, pigments, thixotroping agents
- B32B 2307/412: Transparent
- B32B 2307/7246: Water vapor barrier
- B32B 2307/726: Permeability to liquids, absorption
- B32B 2307/748: Releasability
- B32B 2605/006: Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

There is provided a laminated glass with a functional film having good design property for a long term by suppressing a peeling at an interface between a functional film and an intermediate bonding layer. A laminated glass includes: a pair of glass plates facing each other; a pair of intermediate bonding layers brought into contact with facing surfaces of the pair of glass plates; and a functional film arranged between the pair of intermediate bonding layers, wherein a thickness measured at an end portion of the laminated glass is smaller by 5 μm or more than a thickness of the laminated glass measured at a position on the inside by 10 mm from the end portion, and at least one of intermediate bonding layers has moisture permeability (A) being a degree of moisture permeability at 40° C. and 90% RH measured by JIS Z 0208: 1976 of 50 g/m2·day or less.

## Claims

### Claim 1

A laminated glass, comprising:
a pair of glass plates facing each other, wherein the thickness of the pair of glass plates is uniform;
a pair of intermediate bonding layers brought into contact with facing surfaces of the pair of glass plates, respectively; and
a functional film arranged between the pair of intermediate bonding layers, wherein
a thickness measured at an end portion of the laminated glass is smaller by 5 μm or more than a thickness of the laminated glass measured at a position on the inside by 10 mm from the end portion, and
at least one of the pair of intermediate bonding layers has the following moisture permeability (A),
the moisture permeability (A) indicates that a degree of moisture permeability at a temperature of 40° C. and a humidity of 90% RH measured according to JIS Z 0208: 1976 is 50 g/m2·day or less.

### Claim 2 (depends on 1)

The laminated glass according to claim 1, wherein
the functional film has a polyester film on a surface, and at least one of the intermediate bonding layers brought into contact with the polyester film exhibits the following adhesiveness (B),
the adhesiveness (B) indicates that an adhesive force with respect to a polyester film is 30 N/25 mm or more, which is measured according to JIS K 6864-2: 1999, under conditions where a width of a test piece is 25 mm, a testing rate is 300 mm per minute, and a peel angle is 180 degrees.

### Claim 3 (depends on 1)

The laminated glass according to claim 1, wherein
an end portion of the functional film is positioned on the inside by greater than 0 mm and equal to or less than 40 mm relative to end portions of the pair of glass plates.

### Claim 4 (depends on 1)

The laminated glass according to claim 1, wherein
a thickness of the functional film is 200 μm or more.

### Claim 5 (depends on 1)

The laminated glass according to claim 1, wherein
a total thickness of the intermediate bonding layers is 0.7 mm or more.

### Claim 6 (depends on 1)

The laminated glass according to claim 1, further comprising
a black ceramic layer with a width of 30 mm or less at a peripheral edge portion of a main surface, on a side where it is brought into contact with the intermediate bonding layer, of at least one of the glass plates out of the pair of glass plates.

### Claim 7 (depends on 1)

The laminated glass according to claim 1, wherein
the laminated glass comprises a plurality of the functional films with different functions, at a position between the pair of glass plates and the pair of intermediate bonding layers.

### Claim 8 (depends on 1)

The laminated glass according to claim 1, wherein
the functional film includes at least one selected from the group consisting of a light-control film and an infrared reflection film.