Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1997-07-10
2000-03-14
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264248, 2642711, 2642791, B29C 3902, B29C 6500
Patent
active
060369078
ABSTRACT:
A pair of unvulcanized half outer layer bodies are formed by metallic molds provided with first mold having a hemispherical convex portion and second mold having a hemispherical concave portion. A vulcanized inner core is put into either of half outer layer bodies, and a pair of half outer layer bodies are paired up to form a preparatory form which is to be vulcanization molded in metallic molds for vulcanization molding.
REFERENCES:
patent: 1157420 (1915-10-01), Roberts
patent: 2287270 (1942-06-01), Partridge
patent: 3350252 (1967-10-01), Twickler
patent: 4408980 (1983-10-01), Gallizia
patent: 4501715 (1985-02-01), Barfield et al.
patent: 5150906 (1992-09-01), Molitor et al.
Okido Yoshiyuki
Sano Hideki
Tanaka Hiroaki
Yoshida Yutaka
Lee Edmund H.
Silbaugh Jan H.
Sumitomo Rubber Industries Ltd.
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