Pipes and tubular conduits – Distinct layers – Bonded to each other
Patent
1997-05-30
2000-01-04
Hook, James F.
Pipes and tubular conduits
Distinct layers
Bonded to each other
138122, 138129, 138135, 138144, 138150, 138152, F16L 9147
Patent
active
060099127
ABSTRACT:
A metal pipe and method of forming the same with an integrally formed liner for use in corrosive and abrasive environment utilizes a liner formed of a comparatively thick polymer which is thermally bonded to the metal pipe. An intermediate polymer/adhesive layer is applied to the metal pipe to facilitate thermal/chemical bonding. The intermediate layer is preferably applied to the sheet metal in a pre-treatment process prior to roll forming ribs into the sheet metal. The polyethylene liner is applied after the pipe has been formed, to provide a smooth, hydraulically efficient surface which is resistent to the corrosive action of sulfuric acid and the like encountered in sanitary applications, as well as abrasion caused by the flow of water-born debris such as dirt and gravel as is encountered in culvert applications.
REFERENCES:
patent: 3126306 (1964-03-01), Sherman
patent: 3247692 (1966-04-01), Davis
patent: 3422856 (1969-01-01), Hunter et al.
patent: 3721597 (1973-03-01), Colburn
patent: 3868433 (1975-02-01), Bartz et al.
patent: 3877136 (1975-04-01), Groch et al.
patent: 4312902 (1982-01-01), Murase et al.
patent: 4472475 (1984-09-01), Decroix
patent: 4575400 (1986-03-01), Ueda et al.
patent: 4606953 (1986-08-01), Suzuki et al.
patent: 4630650 (1986-12-01), Davis
patent: 4689174 (1987-08-01), Lupke
patent: 4763830 (1988-08-01), Davis
patent: 4838317 (1989-06-01), Andre et al.
patent: 4964440 (1990-10-01), Andre et al.
patent: 5300336 (1994-04-01), Wong et al.
patent: 5316606 (1994-05-01), Andre
patent: 5356679 (1994-10-01), Houis et al.
Modern Plastic Encyclopedia, Mid-Oct. 1990 issue, vol. 67, No. 11, pp. 70 and 821.
Adhesives Age, Feb. 1985, vol. 28, No. 2, pp. 3 and 8.
LandOfFree
Steel pipe with integrally formed liner and method of fabricatin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steel pipe with integrally formed liner and method of fabricatin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steel pipe with integrally formed liner and method of fabricatin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1064907