公开(公告)号：US20240342964A1

公开(公告)日：2024-10-17

申请号：US18625503

申请日：2024-04-03

申请人： Bridgestone Sports Co., Ltd.

发明人： Masaki SHIRAISHI

IPC分类号： B29C33/56 ,  B29C45/14 ,  B29C45/16 ,  B29C45/37 ,  B29K75/00 ,  B29K609/00 ,  B29L31/54

CPC分类号： B29C33/56 ,  B29C45/14073 ,  B29C45/14819 ,  B29C45/372 ,  B29C45/1671 ,  B29K2075/00 ,  B29K2609/00 ,  B29K2905/08 ,  B29K2909/04 ,  B29L2031/546

摘要： A method for manufacturing a golf ball having a core and a cover of at least one layer includes the step of molding the cover layer with a vertically separating two-part injection mold which has a spherical cavity and three or more support pins disposed so as to be capable of advancing and retracting in a direction perpendicular to a mold parting line, each support pin being housing in a pin housing hole having a nitrided inner peripheral sidewall. This method enables a golf ball cover material to be molded using an injection mold which, because a thick plating of hard chrome does not need to be applied to the inner peripheral sidewalls of the holes housing the support pins, is inexpensive and in which the pin housing holes have a good abrasion resistance.