Method for manufacturing golf club shaft

Abstract

A method for manufacturing a golf club shaft comprises: a preparing step of preparing a shaft main body formed from a fiber reinforced resin; a mounting step of mounting a surface layer material on an outer peripheral surface of the shaft main body, wherein the surface layer material comprises a heat-shrinkable film base material and is provided with a display portion; and a fixing step of firmly fixing the surface layer material to the outer peripheral surface of the shaft main body by heat-shrinking the surface layer material.

1 . A method for manufacturing a golf club shaft comprising:
 a preparing step of preparing a shaft main body formed from a fiber reinforced resin,   a mounting step of mounting a surface layer material on an outer peripheral surface of the shaft main body, wherein the surface layer material comprises a heat-shrinkable film base material and is provided with a display portion, and   a fixing step of firmly fixing the surface layer material to the outer peripheral surface of the shaft main body by heat-shrinking the surface layer material.   
     
     
         2 . The method for manufacturing a golf club shaft according to  claim 1 , wherein
 the surface layer material is formed in a tubular shape prior to being mounted on the shaft main body.   
     
     
         3 . The method for manufacturing a golf club shaft according to  claim 1 , wherein
 the shaft main body is formed from cured laminated prepregs.   
     
     
         4 . The method for manufacturing a golf club shaft according to  claim 2 , wherein
 the shaft main body is formed from cured laminated prepregs.   
     
     
         5 . The method for manufacturing a golf club shaft according to  claim 3 , wherein
 at least a part of the outer peripheral surface of the shaft main body has an unpolished portion, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the unpolished portion.   
     
     
         6 . The method for manufacturing a golf club shaft according to  claim 4 , wherein
 at least a part of the outer peripheral surface of the shaft main body has an unpolished portion, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the unpolished portion.   
     
     
         7 . The method for manufacturing a golf club shaft according to  claim 3 , wherein
 at least a part of the outer peripheral surface of the shaft main body has an unpainted portion, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the unpainted portion.   
     
     
         8 . The method for manufacturing a golf club shaft according to  claim 4 , wherein
 at least a part of the outer peripheral surface of the shaft main body has an unpainted portion, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the unpainted portion.   
     
     
         9 . The method for manufacturing a golf club shaft according to  claim 5 , wherein
 at least a part of the outer peripheral surface of the shaft main body has an unpainted portion, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the unpainted portion.   
     
     
         10 . The method for manufacturing a golf club shaft according to  claim 6 , wherein
 at least a part of the outer peripheral surface of the shaft main body has an unpainted portion, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the unpainted portion.   
     
     
         11 . The method for manufacturing a golf club shaft according to  claim 1 , wherein
 the shaft main body has a front side visible to a golfer and a back side invisible to the golfer when the golfer holds the shaft,   the surface layer material has a joint where the film base material is overlap jointed, and   in the mounting step, the surface layer material is mounted so that the joint is positioned on the back side of the shaft main body.   
     
     
         12 . The method for manufacturing a golf club shaft according to  claim 1 , wherein
 the outer peripheral surface of the shaft main body is provided with a convex pattern extending spirally therearound, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the convex pattern.   
     
     
         13 . The method for manufacturing a golf club shaft according to  claim 2 , wherein
 the outer peripheral surface of the shaft main body is provided with a convex pattern extending spirally therearound, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the convex pattern.   
     
     
         14 . The method for manufacturing a golf club shaft according to  claim 3 , wherein
 the outer peripheral surface of the shaft main body is provided with a convex pattern extending spirally therearound, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the convex pattern.   
     
     
         15 . The method for manufacturing a golf club shaft according to  claim 5 , wherein
 the outer peripheral surface of the shaft main body is provided with a convex pattern extending spirally therearound, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the convex pattern.   
     
     
         16 . The method for manufacturing a golf club shaft according to  claim 7 , wherein
 the outer peripheral surface of the shaft main body is provided with a convex pattern extending spirally therearound, and   in the mounting step, the surface layer material is mounted so as to cover at least a part of the convex pattern.   
     
     
         17 . The method for manufacturing a golf club shaft according to  claim 1 , wherein
 the thickness of the film base material is in a range from 10 to 100 micrometers.   
     
     
         18 . The method for manufacturing a golf club shaft according to  claim 1 , wherein
 the shaft main body is formed from uncured laminated prepregs.   
     
     
         19 . The method for manufacturing a golf club shaft according to  claim 2 , wherein
 the shaft main body is formed from uncured laminated prepregs.   
     
     
         20 . A method for manufacturing a golf club comprises:
 a step of attaching a golf club head to the golf club shaft manufactured by the method according to  claim 1 .