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Club head

a head and club technology, applied in the field of club head, can solve the problems of deteriorating the head's appearance, coating film is subject to scuffing propagation, and the conventional coating material is not entirely satisfactory, so as to achieve good scratch or scuff resistance, good appearance, and repair ability

Inactive Publication Date: 2005-12-22
BRIDGESTONE SPORTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a club head with good scratch and scuff resistance and the ability to repair scuffs by itself over time, even if it is temporarily damaged. This is achieved by a club head composed of a club head body and a coating film covering the club head body, wherein the coating film includes a layer having good scratch or scuff resistance and high resilience. The coating layer can be formed from various coating compounds containing polydimethylsiloxane copolymer, polycaprolactone, and polysiloxane, or a combination of these compounds. The club head can be used for golf, park golf, grand golf, and gate ball.

Problems solved by technology

This conventional coating material, however, is not entirely satisfactory.
Even though it forms an impact- and wear-resistant coating film on the club head, the coating film is subject to scuff which propagates to deteriorate the head's appearance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples

[0062] The invention will be described in more detail with reference to the following Examples, which are not intended to restrict the scope thereof.

Preparation of Coating Compound (1)

[0063] Tetraethoxysilane (320 pbw) was mixed with ethanol (106 pbw), deionized water (21 pbw), and 1% hydrochloric acid (1 pbw). The resulting solution was allowed to stand at 85° C. for two hours and then gradually heated, during which ethanol was recovered. The solution was kept at 180° C. for 30 minutes and then cooled. Thus there was obtained viscous polysiloxane (1).

[0064] VPS-0501 (20 pbw) was mixed with toluene (50 pbw), methyl isobutyl ketone (50 pbw), methyl methacrylate (30 pbw), butyl methacrylate (26 pbw), 2-hydroxyethyl methacrylate (23 pbw), methacrylic acid (1 pbw), and 1-thioglycerin (0.5 pbw). VPS-0501 is a polymerization initiator containing polydimethylsiloxane units, available from Wako Pure Chemical Industries, Ltd. The resulting mixture was allowed to react at 80° C. for eight...

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Abstract

A club head composed of a club head body and a single- or multi-layered coating film covering the club head body, wherein the coating film includes a coating layer having good scratch or scuff resistance and high resilience. The club head keeps a good appearance even after repeated shots because of its good scratch or scuff resistance and its ability to repair scuffs by itself with the lapse of time even though it is temporarily damaged.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This non-provisional application claims priority under 35 U.S.C. §119(a) on Patent Application No. 2004-179028 filed in Japan on Jun. 17, 2004, the entire contents of which are hereby incorporated by reference. BACKGROUND OF THE INVENTION [0002] The present invention relates to a club head excelling in surface durability. [0003] Club heads for golf, park golf, grand golf, and gate ball usually have a coating film for their surface protection and good appearance. Such coating film is required to have not only good appearance but also good resistance to impact and wear resulting from repeated shots by the club or stick. [0004] A club head coating material to meet this requirement is disclosed in JP-A 2003-126306. It is composed of 100 pbw of acrylic resin (solids) and 1.0 to 10.0 pbw of polyethylene wax. It forms a coating film which exhibits good wear resistance and peel resistance owing to the outstanding impact resistance of the acrylic...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A63B53/04A63B102/32C09D167/04C09D183/04C09D183/10C09D201/00
CPCA63B53/04C09D183/10A63B2209/00A63B60/006A63B60/00
Inventor SASAKI, HIROTO
Owner BRIDGESTONE SPORTS
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