Outer wrap for pipelines

Details Outer wrap for pipelines Outer wrap for pipelines

1975-09-22

1977-03-29

Aegerter, Richard E.

Pipes and tubular conduits

Distinct layers

Bonded to each other

138141, 138145, F16L 902, F16L 914, F16L 916

Patent

active

040143708

ABSTRACT:
Outer wrap for pipelines is made of essentially flat thermoplastic fibers preferably woven in a basket weave pattern with from about 15 to 20 per cent of the fabric area being open. On wrapping a pipe freshly coated with coal tar or equivalent material, the wrap does not tend to sink into the coating as is found to be the case with other outer wraps, such as those made from round glass fibers. Because of the ability of the mesh wrap of this invention to eliminate air entrapment during the wrapping operation, an essentially holiday-free coating results. This system also lends itself to uniform distribution of cathodic current over the entire surface. The tough, smooth wrapping does not allow cold flow of coating material through the fabric due to the weight of backfill and tension of the wrap.

REFERENCES:
patent: 427659 (1890-05-01), Bayles
patent: 656187 (1900-08-01), Gunnell
patent: 1013291 (1912-01-01), Gilmore
patent: 1994139 (1935-03-01), MacLachlan
patent: 3548883 (1970-12-01), Cohen
patent: 3939874 (1976-02-01), Gray

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