Process for the continuous production of pipe from particulate m

Plastic and nonmetallic article shaping or treating: processes – Reactive gas or vapor treatment of work – Work is organic material

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Details

156149, 15624412, 15624413, 15624423, 264103, 264129, 264173, 2642096, 264236, 264257, B29C 4124, B29C 4704

Patent

active

046858733

ABSTRACT:
A process for continuously producing pipe by coating a particulate material with a gas curable resin, compacting the coated particulate material in an annular space, treating the compacted, coated particulate material with a curing gas to form a pipe having a porous wall structure, impregnating the porous walls of the pipe with an asphalt or resinous material, and, optionally, winding a reinforcing filament binder around the pipe.

REFERENCES:
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patent: 3299192 (1967-01-01), Lux
patent: 3461094 (1969-08-01), Wesch
patent: 3702798 (1972-11-01), Shannon
patent: 3737430 (1973-06-01), Brown et al.
patent: 3847860 (1974-11-01), Seiler et al.
patent: 3855175 (1974-12-01), Kakizaki
patent: 4115498 (1978-09-01), Kissell et al.
patent: 4145491 (1979-03-01), Ryan
patent: 4251477 (1981-02-01), Christian et al.
patent: 4394475 (1983-07-01), Temple et al.

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