US 11,731,005 B2
Golf ball and method for producing the same
Hirotaka Shinohara, Chichibu (JP); and Takeharu Fujie, Chichibu (JP)
Assigned to Bridgestone Sports Co., Ltd., Tokyo (unknown)
Filed by BRIDGESTONE SPORTS CO., LTD., Tokyo (JP)
Filed on Oct. 15, 2021, as Appl. No. 17/502,232.
Claims priority of application No. 2020-213452 (JP), filed on Dec. 23, 2020.
Prior Publication US 2022/0193501 A1, Jun. 23, 2022
Int. Cl. A63B 37/06 (2006.01); A63B 37/00 (2006.01)
CPC A63B 37/00221 (2020.08) [A63B 37/0019 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for producing a golf ball, comprising the steps of:
forming a first coating film on a surface of a covering having a plurality of dimples; and
forming a second coating film on a surface of the first coating film,
wherein the second coating film is formed of a second coating material composition containing a polyurethane coating material and a solvent having a boiling point of 80° C. or less; and
an elastic recovery rate of the second coating film is 50% or more, and
wherein the first coating film is formed of a first coating material composition containing an acrylic resin and a urethane resin; and
a ratio of an amount of the acrylic resin with respect to a total amount of the acrylic resin and the urethane resin is 50% by mass or more.