Title:
METHOD OF PRODUCING GOLF CLUB HEAD OF COMPOSITE MATERIAL
Document Type and Number:
Japanese Patent JP2562277
Kind Code:
B2
Abstract:
PURPOSE: To aim to shorten a production time of a golf club and improve strength, by bonding the hollow interior part of a shell with predetermined composite material lining, storing a predetermined expansion air bag inside the hollow interior part, closing a shell opening with a covering crown made of the compound material, heating the expansion air bag to expand, and sealing to join the lining and the covering crown.
CONSTITUTION: A lining 30 made of a carbon fiber reinforced composite material is bonded with sidewalls of a hollow interior part 24 formed in a shell 20. Then, an expansion air bag 40 made for flexible rubber is stored. In this bag 40, a mixture of sodium nitrite, ammonium chloride and water is sealed. Next, at the upper end face of the shell 20, a covering crown 50 of the carbon fiber reinforced composite material is sealed. Thus formed molding crude material is put into a burning furnace, heat-treated at 140 to 160°C to cause a chemical reaction within the expansion air bag 40, and is bonded to the lining 30, the covering crown 50, the inner peripheral wall and the upper end face of the shell 20 by the pressure of generated N2 gas and the heat to harden together.
Inventors:
RA MITSUO
Application Number:
JP398294A
Publication Date:
December 11, 1996
Filing Date:
January 19, 1994
Export Citation:
Assignee:
RA MITSUO
International Classes:
A63B53/04; A63B102/32; (IPC1-7): A63B53/04
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)