Manufacturing of resin-aggregate pipes

Details Manufacturing of resin-aggregate pipes Manufacturing of resin-aggregate pipes

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

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