Pipe insulating jacket

Details Pipe insulating jacket Pipe insulating jacket

1979-02-16

1981-06-02

Lesmes, George F.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

138149, 156215, 156218, 156304, 156 54, 428129, 428 71, 428 76, 428310, 428313, 428458, 428461, B32B 304, B29C 1900

Patent

active

042712181

ABSTRACT:
In a pipe insulating jacket comprising a hollow cylinder made of a soft foamed material and an outer sleeve with abutting edges parallel to the axis of the pipe, the improvement wherein the outer sleeve is formed by a metal foil carrying a heat-softenable coating on its inside, the inside of the metal foil being bonded throughout to the surface of the soft foamed material and in proximity to the abutting edges being welded to itself along its upwardly bent edges. Advantageously the foam is closed-cell crosslinked polyethylene of a bulk density of about 30 kg/m.sup.3, the coating is unfoamed uncrosslinked polyethylene about 30.mu. thick, and the metal foil is an aluminum foil about 18.mu. thick carrying on its outside a foil of heat-softenable polyester about 5 to 20.mu. thick.

REFERENCES:
patent: 3206541 (1965-09-01), Jachimowicz
patent: 3614967 (1971-10-01), Royston
patent: 3687748 (1972-08-01), Clock et al.
patent: 3916955 (1975-11-01), Nefferstedt et al.
patent: 3992237 (1976-11-01), Gerholt et al.
patent: 4023589 (1977-05-01), Rejeski
Modern Plastics Encyclopedia , "Polyethylene Foam", by Traggeser, vol. 52, No. 10A, pub. 10/75, p. 113.

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