Title:
GOLF BALL
Document Type and Number:
Japanese Patent JP2022038283
Kind Code:
A
Abstract:
To provide a golf ball having a function to assist a player even after long-term use.SOLUTION: A golf ball comprises a core and a cover positioned outside the core, and a partial intermediate layer of an n layer (n is a natural number) is disposed between the core and the cover. An area of the core in an area laminated with the cover is 5.0% or more and 95.0% or less of a surface area of a virtual ball having a radius as an average value of a distance from the center point of the core to the surface of the core. In the external surface of the golf ball, a color difference ΔE1 by a CIELAB color system between an area C in which the cover directly laminates the core, and an area M in which the cover laminates the partial intermediate layer is 20.0 or more.SELECTED DRAWING: Figure 1
Inventors:
TAKUBO TOSHIYUKI
SAJIMA TAKAHIRO
SAJIMA TAKAHIRO
Application Number:
JP2020142703A
Publication Date:
March 10, 2022
Filing Date:
August 26, 2020
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
A63B45/02; A63B37/00
Attorney, Agent or Firm:
Aiko Patent Office, a patent business corporation