Golf ball and manufacturing method thereof
View Patent ↗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/cm 2 . 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.
1. 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/cm 2 ,
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.
2. The golf ball according to claim 1 , wherein the Shore-D hardness of the cover member of the outermost layer is equal to or smaller than 70.
3. The golf ball according to claim 1 , wherein the roughness on the surface of the coating layer is acquired by a surface treatment of spraying fine particles over the surface.
4. The golf ball according to claim 2 , wherein the roughness on the surface of the coating layer is acquired by a surface treatment of spraying fine particles over the surface.
5. 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/cm 2 ,
a maximum height Rz of the coating layer being equal to or larger than 3μm and being equal to or smaller than 7μm.
6. The golf ball according to claim 1 , wherein the 10% modulus of the coating layer being equal to or larger than 60kgf/cm 2 .
7. The method according to claim 5 , wherein the 10% modulus of the coating layer being equal to or larger than 60kgf/cm 2 .