# US 10,245,898 B2 · Rubber decor and tire

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- Number: US 10,245,898 B2
- Document ID: US10245898B2
- Status: Granted
- Kind: B2
- Application number: 14/365,364
- Filed: 2012-11-26
- Published: 2014-11-20
- Granted: 2019-04-02
- Earliest claimed: 2011-12-27
- Assignees: Bridgestone Corporation
- Applicants: Bridgestone Corporation
- Inventors: Yuki Nakamura
- Web page: https://patentgrep.com/patent/US10245898B2

## CPC

- B60C 13/001: {Decorating, marking or the like}
- B60C 13/04: having annular inlays or covers, e.g. white sidewalls
- Y10T 428/24628: Nonplanar uniform thickness material
- Y10T 428/24802: Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

There is provided a rubber decor or a tire having: a rubber; a white layer arranged on or above a surface of the rubber and composed of a white paint; and a colored layer composed of a paint except a white paint and at least partially applied on the white layer. The darkest part of the white layer has brightness of 80% or more. The white layer and the colored layer constitute a desired decoration.

## Claims

### Claim 1

A tire comprising:
a tread portion contacting a road surface; and
a sidewall portion continuing into the tread portion,
wherein sidewall rubber constituting the sidewall portion includes a rubber decor comprising:
a rubber;
a white layer arranged on or above a surface of the rubber and composed of a white paint; and
a colored layer composed of a paint except a white paint and at least partially applied on the white layer,
wherein the darkest part of the white layer has brightness of 80% or more, and the white layer and the colored layer constitute a desired decoration,
wherein the white paint is an ultraviolet ink and the paint except a white paint is an ultraviolet ink,
wherein the rubber comprises a barrier layer at the surface of the rubber and at least at an area adjacent to the white layer, the barrier layer including butyl-based rubber,
wherein an outermost end in a tire radial direction of the barrier layer is arranged on an inner side of a tire maximum width position in the tire radial direction, and
wherein tire radial outer ends of the white layer and the colored layer are arranged on the inner side of the tire maximum width position in the tire radial direction.

### Claim 2 (depends on 1)

The tire according to claim 1, wherein thickness (tw) of the thickest part of the white layer is equal or greater than thickness (tc) of the thickest part of the colored layer.

### Claim 3 (depends on 2)

The tire according to claim 2, wherein the ratio (tw/tc) of thickness (tw) of the thickest part of the white layer to the thickness (tc) of the thickest part of the colored layer is not less than 1 and not more than 4.

### Claim 4 (depends on 3)

The tire according to claim 3, wherein the ratio (tw/tc) of the thickness (tw) of the thickest part of the white layer to the thickness (tc) of the thickest part of the colored layer is not less than 1 and not more than 2.

### Claim 5 (depends on 1)

The tire according to claim 1, wherein the white layer is pure white.

### Claim 6 (depends on 1)

The tire according to claim 1, wherein total thickness (T) of the thickest part of the white layer and the colored layer is 250 μm or less.

### Claim 7 (depends on 1)

The tire according to claim 1, wherein at least a part of the colored layer protrudes from the white layer and is arranged on or above the surface of the rubber.

### Claim 8 (depends on 1)

The tire according to claim 1, wherein at least a part of the white layer protrudes from the colored layer and is arranged on or above the surface of the rubber.

### Claim 9 (depends on 1)

The tire according to claim 1, wherein the colored layer is directly on the white layer.

### Claim 10 (depends on 1)

The tire according to claim 1, wherein the white layer has a brightness of 100%.

### Claim 11 (depends on 1)

The tire according to claim 1, wherein the thickness of the colored layer is from 20 μm to 40 μm.

### Claim 12 (depends on 11)

The tire according to claim 11, wherein the thickness of the white layer is 50 μm or more.

### Claim 13 (depends on 11)

The tire according to claim 11, wherein the thickness of the white layer is 100 μm or more.

### Claim 14 (depends on 1)

The tire according to claim 1, wherein the thickness of the white layer is 50 μm or more.

### Claim 15 (depends on 1)

The tire according to claim 1, wherein the barrier layer includes 80 parts by weight or more of the butyl-based rubber per 100 parts by weight of rubber in the barrier layer.