# US 11,077,650 B2 · Method for producing a composite pane for a motor vehicle

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- Number: US 11,077,650 B2
- Document ID: US11077650B2
- Status: Granted
- Kind: B2
- Application number: 16/345,842
- Filed: 2017-09-21
- Published: 2019-08-15
- Granted: 2021-08-03
- Earliest claimed: 2016-10-28
- Assignees: Saint-Gobain Glass France
- Applicants: Saint-Gobain Glass France
- Inventors: Stephan Gillessen; Pascal Bauerle; Jean Jacques Bris
- Web page: https://patentgrep.com/patent/US11077650B2

## CPC

- B32B 37/06: characterised by the heating method
- B32B 17/10036: {comprising two outer glass sheets}
- B32B 17/10541: {comprising a light source or a light guide}
- B32B 17/10761: {containing vinyl acetal}
- B32B 17/10871: {in combination with particular heat treatment}
- B32B 37/04: characterised by the partial melting of at least one layer
- B29L 2031/3052: {Windscreens}
- B32B 2605/006: Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
- B60K 2360/785: on or in relation to the windshield or windows
- G02B 2027/0196: {having transparent supporting structure for display mounting, e.g. to a window or a windshield}
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A method for producing a composite pane for a motor vehicle includes heating the plastic film at least in the region of the LED into a fluid state by a heating source positioned on an outer surface of the first pane or the second pane or arranged at a distance from the outer surface of the first pane or the second pane, and introducing the LED into the plastic film into the fluid state with displacement of a predefined volume of the plastic film. After introducing the LED into the plastic film, the method includes laminating the first pane and the second pane with the interposed plastic film.

## Claims

### Claim 1

A method for producing a composite pane for a motor vehicle, comprising:
providing a first pane and a second pane;
arranging a plastic film between the first pane and the second pane;
arranging a light emitting diode (LED) on a surface of the plastic film;
locally heating the plastic film at least in a region of the LED into a fluid state by a heating source positioned on an outer surface of the first pane or the second pane or arranged at a distance from the outer surface of the first pane or the second pane;
introducing the LED into the plastic film heated into the fluid state with displacement of a predefined volume of the plastic film;
after introducing the LED into the plastic film, laminating the first pane and the second pane with the interposed plastic film.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the heating source heats the plastic film at least in the region of the LED with emission of radiant heat and/or convection heat.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the heating source is includes a heating foil that is glued on the outer surface of the first pane or the second pane.

### Claim 4 (depends on 3)

The method according to claim 3, wherein the heating foil is glued exclusively onto a part of the outer surface of the first pane or of the second pane.

### Claim 5 (depends on 1)

The method according to claim 1, wherein the plastic film has a shape and is heated to a temperature of 50 to 150° C., and wherein the plastic film is cooled after being heated to the temperature of 50 to 150° C., the plastic film retaining its shape after cooling below a temperature of 50° C.

### Claim 6 (depends on 5)

The method according to claim 5, wherein the plastic film is heated to a temperature of 80 to 150° C.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the LED is introduced into the plastic film heated into the fluid state while applying a force directed substantially perpendicular to the plastic film.

### Claim 8 (depends on 1)

The method according to claim 1, wherein the predefined volume of the plastic film is displaced substantially in a longitudinal direction of the plastic film upon introduction of the LED into the plastic film heated into the fluid state.

### Claim 9 (depends on 1)

The method according to claim 1, wherein the plastic film has a thickness, and wherein upon introduction of the LED into the plastic film heated into the fluid state, a volume of the plastic film in a direction of the thickness of the plastic film is displaced by the LED so that a remaining thickness of the plastic film after heating at a location where the LED is introduced is less than 90% of the thickness of the plastic film before heating.