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
1973-04-09
1977-01-04
White, Robert F.
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
264270, 264312, 425426, B28B 120
Patent
active
040013707
ABSTRACT:
Methods of centrifugally molding a resin pipe or molding a layered composite pipe utilizing a rotating inner member are disclosed. The rotating inner member rotates at a speed higher than the centrifugally rotating mold and is movable towards and away from the mold surface. Movement toward the mold compresses the molding material between the rotating inner member and the centrifugally rotating mold. Movement away from the mold permits any material adhering to the inner member to be cleaned from said inner member due to the centrifugal speed of said inner member.
REFERENCES:
patent: 2285497 (1942-06-01), Cuno
patent: 2671260 (1954-03-01), Jessen
patent: 2892218 (1959-06-01), McGhee
patent: 3029475 (1962-04-01), Bastone
patent: 3340115 (1967-09-01), Rubenstein
Baker Clifford Aubrey
Miller, deceased Rex
Humes Limited
Pavelko Thomas P.
White Robert F.
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