Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing multilayer work or article
Patent
1983-11-15
1986-03-11
Silbaugh, Jan
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Producing multilayer work or article
264512, 273167H, B29C 4902, B29D 900
Patent
active
045754470
ABSTRACT:
In production of a core-shell type golf club head, a thermoplastic synthetic resin core preferably of 15.degree. C. or higher glass transition point is used as a substitute for the conventional rubber air bag for stable and reliable shaping of an FRP shell even under the room temperature condition and beautiful moulding of the shell through softening and inflation of the core at heat pressing, thereby avoiding air void generation and layer separation in the FRP shell.
REFERENCES:
patent: 2300441 (1942-11-01), Voit et al.
patent: 3087207 (1963-04-01), Styra
patent: 3135640 (1964-06-01), Kepka et al.
patent: 3270111 (1966-08-01), Haldemann
patent: 3493240 (1970-02-01), Jenks
patent: 4314964 (1982-02-01), Ferrary
Nippon Gakki Seizo Kabushiki Kaisha
Silbaugh Jan
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