Manufacturing process of porous tubular members

Details Manufacturing process of porous tubular members Manufacturing process of porous tubular members

1972-02-08

1977-08-09

Lechert, Jr., Stephen J.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264112, 428 36, 55503, B05C 714

Patent

active

040411958

ABSTRACT:
The manufacturing process of porous tubular members constituted by two coaxial layers comprises transferring of a layer intended to become the internal layer and being previously applied over a rigid core inside a tubular rough shape which is intended to constitute an external layer by compression of the rough shape over the core supporting the internal layer.

REFERENCES:
patent: 2390160 (1945-12-01), Marvin
patent: 3087879 (1963-04-01), Walker et al.
patent: 3109797 (1963-11-01), Maxwell

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