Corrosion resistant glass-reinforced plastic pipe liner
AssigneeExxon Research & Engineering Co.
InventorsJames W. Rinker, William M. Jacobs
Life of this patent
Estimating the term…
Abstract
An inner liner for glass-reinforced plastic pipes comprising a nonwoven fabric bonded to each side of a plastic film. In the manufacture of pipe, the composition is saturated with the plastic resin, e.g., polyester resin, and wound onto the pipe mandrel. The resin-glass body of the pipe is then wound over the liner and the entire composition cured. The liner prevents damage to the pipe as a result of corrosive material, e.g., mineral acids.
Claims9
A reinforced plastic pipe wherein said reinforced pipe is made by impregnating the reinforcing material with a curable plastic resin and curing said reinforcing material-resin composite which comprises:
- a. an innerliner of a composition comprising a central barrier core of flexible thermoplastic material sandwiched between two porous members, said liner being impregnated with a curable plastic resin;
- and
- b. an overlayer of resin impregnated glass reinforcing material selected from the group consisting of glass mat, glass fabric and mixtures thereof.
A reinforced plastic pipe wherein said pipe comprises at least one layer of a reinforcing element impregnated with a curable resin selected from the group consisting of polyester resin and epoxy resins, the reinforcing element-curable resin composition being exposed to curing conditions, thereby bringing the resin to a fully cured state wherein said reinforcing element comprises a central core of a thermoplastic flexible polymeric material sandwiched between two layers of a porous element, said porous element being thermally bonded to said core.
A composite reinforced plastic pipe which comprises:
- a. an innerliner of a composition comprising a central barrier core of elastomeric material selected from the group consisting of butyl rubber, natural rubber, and styrene butadiene rubber sandwiched between two porous members, said liner being impregnated with a curable plastic resin;
- and
- b. an overlayer of resin impregnated glass reinforcing material selected from the group consisting of glass mat, glass fabric and mixtures thereof.
Dependencies are inferred from the claim text.