Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1990-09-04
1992-06-09
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156195, 156337, B29C 6310
Patent
active
051203812
ABSTRACT:
A continuous strip non-shielding and pressure-resistant wrapping material for protecting buried metallic pipe is disclosed. The wrapping material comprises a continuous layer of cold-flowable rubberized bitumen bonded to a substantially non-elastic porous support backing with a release film positioned on the exposed face of the bitumen to protect the bitumen prior to application. When applied to a metallic pipe, the protective bitumen is secured to and held in place by the non-elastic support backing and thus cannot sag away from the pipe. The porous support backing provides potential electric current paths through each pore so that cathodic protection can be effectively utilized to protect against corrosion in even the smallest holiday in the bitumen layer.
REFERENCES:
patent: 30889 (1882-03-01), McNulty
patent: 1867984 (1932-07-01), Pistor
patent: 2650619 (1953-09-01), Pflaumer
patent: 2828798 (1958-04-01), Hopkins et al.
patent: 3388723 (1968-06-01), McNulty
patent: 4192697 (1980-03-01), Parker et al.
Ball Michael W.
Kanz Jack A.
Maki Steven D.
Polyguard Products Incorporated
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