IP Library Granted Patent US 12,330,024
Granted Patent B2
US 12,330,024 · App. 17/118,725 · Granted Jun 17, 2025

Color golf ball with natural metallic gloss

Inventors: Kyung Ahn Moon (Seoul, KR); Sang Wook Park (Seoul, KR)
Assignee: Volvik Inc.
A63B37/00223A63B37/0074A63B37/0075C09D5/002C09D7/67C09D7/68C09D175/04A63B2209/00
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Quick Facts
Patent No.
US 12,330,024
App. No.
17/118,725
Granted
Jun 17, 2025
Kind
B2
Abstract

A color coating solution is produced by dispersing a nano-color pigment and a metallic gloss pigment into a polymer resin, and the solution is coated and molded on a cover layer having a color similar to that of the color coating solution. Since the pigment composition is different between the cover layer and the color coating layer, internal shieldability is improved. As a result, a dark color or uneven surface of the core, mantle, or cover is not exposed, so that a surface defect rate can be reduced. Since both the nano-color pigment and the metallic gloss pigment are used in the color coating layer, the metallic gloss and the color are exhibited in a single layer. Therefore, it is possible to provide natural metallic gloss without a strange texture feeling.

Claims (30)

1. A color golf ball comprising:

a core;

a cover layer formed on the core; and

a color coating layer formed on the cover layer,

wherein the color coating layer contains a polymer resin composition, a nano-color pigment, and a metallic gloss pigment, wherein the polymer resin composition comprises polyol resin, toluene, n-butyl acetate, methyl iso-butyl ketone, propylene glycol methyl ether acetate, and an additive.

2. The color golf ball according to claim 1 , wherein the nano-color pigment has an average particle size of 100 to 700 nm.

3. The color golf ball according to claim 1 , wherein the metallic gloss pigment of the color coating layer has an average particle size of 5 to 100 μm.

4. The color golf ball according to claim 1 , wherein the color coating layer contains the nano-color pigment and the nano-color pigment and the metallic gloss pigment at a weight ratio of 1:0.2 to 1:20.

5. The color golf ball according to claim 1 , further comprising a transparent coating layer formed on the color coating layer.

6. The color golf ball according to claim 1 , wherein the color golf ball has a flop index value of 1 to 9.

7. A color golf ball comprising:

a core;

a mantle layer formed on the core;

a cover layer formed on the mantle layer; and

a color coating layer formed on the cover layer,

wherein the color coating layer contains a polymer resin composition, a nano-color pigment, and a metallic gloss pigment, and wherein the polymer resin composition comprises polyol resin, toluene, n-butyl acetate, methyl iso-butyl ketone, propylene glycol methyl ether acetate, and an additive.

8. The color golf ball according to claim 7 , wherein the nano-color pigment has an average particle size of 100 to 700 nm.

9. The color golf ball according to claim 7 , wherein the metallic gloss pigment of the color coating layer has an average particle size of 5 to 100 μm.

10. The color golf ball according to claim 7 , wherein the color coating layer contains the nano-color pigment and the nano-color pigment and the metallic gloss pigment at a weight ratio of 1:0.2 to 1:20.

11. The color golf ball according to claim 7 , further comprising a transparent coating layer formed on the color coating layer.

12. The color golf ball according to claim 7 , wherein the color golf ball has a flop index value of 1 to 9.

13. The color golf ball according to claim 1 , wherein the color coating layer has a thickness of 4.5 to 6 μm.

14. A method of forming a color golf ball, the method comprising:

forming a cover layer on a core; and

forming a color coating layer on the cover layer,

wherein the color coating layer contains a polymer resin composition, a nano-color pigment, and a metallic gloss pigment, wherein the polymer resin composition comprises polyol resin, toluene, n-butyl acetate, methyl iso-butyl ketone, propylene glycol methyl ether acetate, and an additive.

15. The method according to claim 14 , further comprising forming a transparent coating layer on the color coating layer.

16. The method according to claim 14 , wherein forming the color coating layer on the cover layer comprises dipping the cover layer on the core into a mixture of the polymer resin composition, the nano-color pigment, and the metallic gloss pigment.

17. The method according to claim 14 , wherein forming the color coating layer on the cover layer comprises spraying a mixture of the polymer resin composition, the nano-color pigment, and the metallic gloss pigment onto the cover layer.

18. The method according to claim 17 , wherein spraying the mixture of the polymer resin composition, the nano-color pigment, and the metallic gloss pigment onto the cover layer comprises spraying the mixture of the polymer resin composition, the nano-color pigment, and the metallic gloss pigment onto the cover layer until the color coating layer has a thickness of 3 to 10 μm.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 11, 2020
From: MOON, KYUNG AHN; PARK, SANG WOOK
To: VOLVIK INC.
Reel/Frame 054613/0910 →
Priority Claims (2)
KR 10-2019-0165847 · Dec 12, 2019 · national
KR 10-2020-0168011 · Dec 4, 2020 · national
Continuity (1)
Related Publication 20210178230A1 · Jun 17, 2021
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