Golf ball and manufacturing method thereof
AssigneeDunlop Sports Co. Ltd.
InventorTakahiro Sajima
Life of this patent
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Abstract
A golf ball of one aspect of the present invention includes a spherical core, one or more cover members to cover the core, and a coating layer to coat a cover member configuring an outermost layer of the one or more cover members. A plurality of dimples is formed in the cover member. Shore-D hardness of the cover member is equal to or larger than 50. A 10% modulus of the coating layer is equal to or smaller than 160 kgf/cm2. Roughness is produced on a surface of the coating layer after applying a coating material over the cover member of the outermost layer A maximum height Rz of the coating layer is equal to or larger than 3 μm.
Claims7
A golf ball comprising:
- a spherical core;
- one or more cover members to cover the core;
- and
- a coating layer to coat a cover member configuring an outermost layer of the one or more cover members,
- a plurality of dimples being formed in the cover member of the outermost layer,
- Shore-D hardness of the cover member of the outermost layer being equal to or larger than 50,
- a 10% modulus of the coating layer being equal to or smaller than 160kgf/cm2,
- roughness being produced on a surface of the coating layer after applying a coating material over the cover member of the outermost layer,
- a maximum height Rz of the coating layer being equal to or larger than 3μm and being equal to or smaller than 7μm.
A method for manufacturing a golf ball, comprising:
- a step of forming a spherical core;
- a step of covering the core with one or more cover members, and forming a plurality of dimples in a cover member configuring an outermost layer of the one or more cover members;
- a step of coating the cover member of the outermost layer with a coating layer;
- and
- a step of producing roughness on a surface of the coating layer,
- Shore-D hardness of the cover member of the outermost layer being equal to or larger than 50,
- a 10% modulus of the coating layer being equal to or smaller than 160kgf/cm2,
- a maximum height Rz of the coating layer being equal to or larger than 3μm and being equal to or smaller than 7μm.
Dependencies are inferred from the claim text.