Patent ID: 6528003
Filing Date: 2003-03-04
Classification: A63B,B29C,B29L,B65H

Abstract:
A manufacturing method for a golf ball, which comprises:holding a core sphere or a wound-string core in a pair of 34 mm to 42 mm diameter bottom rollers and a pair of concave top rollers having a minimum diameter of 15 mm to 35 mm at a central portion; rotating and reciprocating the bottom rollers in an axis direction so as to move opposite to each other to rotate the core sphere or wound-string core; winding rubber string; and pressurizing the core sphere or wound string core intermittently by the pair of top rollers with predetermined pressure to obtain a wound string core of a predetermined diameter, wherein a rotation frequency of the bottom rollers is 1100 rpm to 2000 rpm, a ratio of rotation of the bottom roller to reciprocation of the bottom roller is 10:15 to 15:10, and a ratio of pressurization of the top roller to reciprocation of the bottom roller is 1:14 to 1:5.