Centrifugal process for the production of a pipe-shaped body and

Details Centrifugal process for the production of a pipe-shaped body and Centrifugal process for the production of a pipe-shaped body and

1981-01-29

1983-05-17

Hoag, Willard E.

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

264311, B29D 302, B29D 2308, B29G 700, B29C 504

Patent

active

043839657

ABSTRACT:
A pipe-shaped body having an outer surface of synthetic resin with an inner reinforcement comprising an inner layer of fibrous material and an outer layer of a mat permeable by the synthetic resin and impenetrable by fibers of the fibrous material is formed by providing a mold having an inner wall shaped like the outer surface of the pipe-shaped body, inserting the reinforcement into the mold such that the mat portion thereof generally loosely abuts the inner wall of the mold, injecting the synthetic resin into the mold, and rotating the mold about its longitudinal axis.

REFERENCES:
patent: 2859151 (1958-11-01), Usab et al.
patent: 2887728 (1959-05-01), Usab
patent: 2999780 (1961-09-01), Perrault
patent: 3012922 (1961-12-01), Wiltshire
patent: 3051994 (1962-09-01), Carozzo
patent: 3768943 (1973-10-01), Maihart
patent: 4002714 (1977-01-01), Usui
patent: 4038001 (1977-07-01), Stinnes

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