Gaseous diffusion resistant tube

Details Gaseous diffusion resistant tube Gaseous diffusion resistant tube

1984-02-13

1986-09-30

Bryant, III, James E.

Pipes and tubular conduits

Combined

138137, 138140, 138178, 428 36, F16L 1100

Patent

active

046142088

ABSTRACT:
A gaseous resistant tube comprising an inner core of a heat resistant polymeric material, typically cross-linked polyethylene, protected outer layer of impact resistant material and an intermediate layer of non-metalliferous gaseous resistant material, wherein the intermediate layer is bonded to at least one of the inner core and the outer layer by bonding material compatible with each of the materials to be bonded and is sufficiently elastic that it will not delaminate or rupture either itself or the adjoining layer under heat cycling conditions. In a preferred embodiment of the invention, the bonding material is preferably a material different from the layer to which it bonds.

REFERENCES:
patent: 2800145 (1957-07-01), Peierls et al.
patent: 2971538 (1961-02-01), Brumbach
patent: 3184358 (1965-05-01), Utz
patent: 3956544 (1976-05-01), Harrington
patent: 4035534 (1977-07-01), Nyberg
patent: 4044187 (1977-08-01), Kremkau
patent: 4178401 (1979-12-01), Neinberg et al.
patent: 4244914 (1981-01-01), Ranalli et al.

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