| 摘要 |
PCT No. PCT/GB90/00631 Sec. 371 Date Oct. 25, 1991 Sec. 102(e) Date Oct. 25, 1991 PCT Filed Apr. 24, 1990 PCT Pub. No. WO90/12679 PCT Pub. Date Nov. 1, 1990.A method of manufacturing a gold club including feeding a predetermined weight of aramid reinforced nylon thermoplastic material from a screw of an injection molding system into a suitably shaped mold. After an initial portion of the thermoplastic has passed into the mold a stream of a predetermined volume of nitrogen under pressure is introduced into the thermoplastic feed to urge the thermoplastic against the inner walls of the mold to form a hollow club. When the feed and stream into the mold have been completed, the mold is maintained under pressure for a period of time to allow the thermoplastic to set before the nitrogen is released.
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