Coated recoverable articles

Details Coated recoverable articles Coated recoverable articles

1986-12-19

1988-03-22

Arola, Dave W.

Pipe joints or couplings

With casing, lining or protector

Insulated

285 93, 285138, 285293, 285294, 285381, 285915, 138 99, 156 86, 174DIG8, 428349, 428913, F16L 1112

Patent

active

047324120

ABSTRACT:
A recoverable polymeric material is coated with discrete regions of a sealant, such as a mastic, and of a heat-activatable adhesive, such as a hot-melt adhesive. The coated material forms a sleeve which may be of tubular or wrap-around configuration. The sleeve may be used to cover weld joints in polyethylene coated steel pipes. The sealant ensures a flexible water-proof seal around the weld and the adhesive provides a second seal and prevents any long range movement between the sleeve and the pipe.

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patent: 4344909 (1982-08-01), De Blauwe
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