Golf ball and manufacturing method therefor

A method for manufacturing a golf ball, comprising:

• a core forming operation of preparing a rubber mixture for a core, press molding the rubber mixture for a core, and polishing the same to manufacture a core having an average diameter of 37 to 39 mm and a first density;
• a mantle forming operation of preparing a resin mixture for a mantle by mixing amorphous alloy power with a resin for forming a mantle, and injection molding the resin mixture for a mantle to surround the core and then polishing the same to obtain a mantle having a thickness of 0.8 to 1.2 mm and a second density;
• and
• a cover forming operation of preparing a mixture for forming a cover by mixing an additive with a resin for forming a cover, and casting molding the resin mixture for forming a cover to surround the mantle to obtain a cover having a thickness of 1 to 1.4 mm and a third density,
• wherein
• the first density is 1.10 to 1.20 (g/cm3),
• the second density is 0.95 to 1.15 (g/cm3), and
• the third density is 1.05 to 1.15 (g/cm3).