Patent ID: 7207901
Filing Date: 2007-04-24
Classification: A63B

Abstract:
1. A golf club head comprising a main body and a coating film covering a metallic surface of the main body, wherein the coating film comprises a clear foundation layer formed directly on the metallic surface and containing acid-modified polyolefin based resin as its base resin, and a colored clear second layer formed on the foundation layer, so that said metallic surface is visible through the coating film, wherein said acid-modified polyolefin based resin has an acid value of from 40 to 65, and said clear foundation layer is formed by applying a paint containing said acid-modified polyolefin based resin to the metallic surface and by baking the applied paint to harden, so that a hydroxyl group of an acid of the acid-modified polyolefin therein makes hydrogen bonding with oxygen in an oxide film on said metallic surface.