Superimposed coverings having increased stability

Details Superimposed coverings having increased stability Superimposed coverings having increased stability

1996-02-09

1997-09-02

Dye, Rena

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 3691, 428 349, 428 57, 428133, 428194, 428200, 428349, 428913, 138141, 138146, 138155, 174DIG8, B32B 712

Patent

active

056629745

ABSTRACT:
An article, for example a pipe, has a first covering such as a polymer layer, and a second covering, such as a repair patch or a repair deposit of melt-on adhesive or a wrap or a sleeve protecting a welded joint between two lengths of such pipe. The second covering may have a functional coating on an underside which is applied on and is at least partially superimposed over the first covering. A cured deposit of thermoset resin is applied at least over the edges of the second covering, for example in the form of a fibrous tape impregnated with a curable resin composition, and bonds to the first and second coverings. The resin deposit provides the second covering with increased stability against displacement laterally of said first covering, for example as a result of soil stress.

REFERENCES:
patent: 3770556 (1973-11-01), Evans et al.
patent: 4200676 (1980-04-01), Caponigro et al.
patent: 4472468 (1984-09-01), Tailor et al.
patent: 4732632 (1988-03-01), Pieslak et al.
patent: 4803104 (1989-02-01), Peigneur et al.
patent: 4961978 (1990-10-01), Doheny, Jr. et al.
patent: 5134000 (1992-07-01), Smythe et al.
patent: 5175032 (1992-12-01), Steele et al.

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