Jacketing steel tubes and pipes

Details Jacketing steel tubes and pipes Jacketing steel tubes and pipes

1981-12-07

1984-05-29

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

15624413, 15624417, 15624423, 264173, 4251331, B29H 526

Patent

active

044514131

ABSTRACT:
A steel pipe is jacketed by concurrent extrusion of an ethylene hose concentric with a copolymer hose serving as an adhesive, the pipe passing through the extruder heat at an approximately 10% higher speed. The copolymer is predried, and the pipe is preferably precoated with heat-curable phenol or epoxy.

REFERENCES:
patent: 3561493 (1971-02-01), Maillard
patent: 3895085 (1975-07-01), Suzuki et al.
patent: 3994644 (1976-11-01), Hegler et al.
patent: 4101699 (1978-07-01), Stine et al.
patent: 4144111 (1979-03-01), Schaerer
patent: 4345363 (1982-08-01), Leuchs et al.
Basf Instruction Sheet For Lupolen A2910MX of Mar. 1977.

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