Methods, apparatus or equipment and systems for lining conduits, e.g., preferably subterranean pipelines and passageways, such as sewers, with a liner impregnated with a curable resin in order to secure the conduit against ingress or egress of liquids.

A resin composition and method for installing a pipe liner that allows the liner to be fully wet out with a resin and activator and stored for a period of up to six months prior to installation and curing. A method of lining a pipe with a delayed curing resin composition is also provided that includes fully wetting out a liner with a blended two part epoxy composition such that the liner can be transported in a wet out fashion, placed in a pipe to be lined and repositioned as needed without concern for the resin composition to begin curing.

A method for relining a pipeline includes using a composition of (a) a resin crosslinkable by a photoinitiator activated by an actinic light; (b) a resin that can stay inert or be cross-linked by a co-hardening booster; (c) a photoinitiator compound that is photoactivatable by irradiation with an actinic light source; and d) optionally, a booster/co-hardener compound that acts as a crosslinker of the inert resin to increase the overall mechanical, thermal and chemical strengths of the system. A kit for relining a pipeline with such method includes a first container housing (a), (b) and (c); a second container housing (d), which may be used optionally; a substrate suitable for being impregnated with the composition of the first container alone and optionally with the composition resulting from mixing the contents of the first and the second container; and, optionally, an actinic light source and an adjustable pressure air flow generator.

A resin composition and method for installing a pipe liner that allows the liner to be fully wet out with a resin and activator and stored for a period of up to six months prior to installation and curing. A method of lining a pipe with a delayed curing resin composition is also provided that includes fully wetting out a liner with a blended two part epoxy composition such that the liner can be transported in a wet out fashion, placed in a pipe to be lined and repositioned as needed without concern for the resin composition to begin curing.

A liner tube is provided for repairing either a single pipe line or a main pipe line having a lateral pipe line connected thereto. The liner tube assembly includes a liner tube impregnated with a liquid material capable of curing and hardening. The liner tube includes a gasket or band of hydrophilic paste positioned about the juncture of the pipe lines. The gasket or bands form a tight seal between the liner tube and the pipe line.

Methods, apparatus or equipment and systems for lining conduits, e.g., preferably subterranean pipelines and passageways, such as sewers, with a liner impregnated with a curable resin in order to secure the conduit against ingress or egress of liquids.

Methods, apparatus or equipment and systems for lining conduits, e.g., preferably subterranean pipelines and passageways, such as sewers, with a liner impregnated with a curable resin in order to secure the conduit against ingress or egress of liquids.

Methods, apparatus or equipment and systems for lining conduits, e.g., preferably subterranean pipelines and passageways, such as sewers, with a liner impregnated with a curable resin in order to secure the conduit against ingress or egress of liquids.

An arrangement for mending a pipe, particularly a waste water pipe, which arrangement comprises the following elements: a first textile hose (ALg) woven in a single piece preferably laminated on the outer wall thereof, a felt hose (FS) arranged in the interior of the first textile hose (ALg) and wetted with a curable synthetic resin mixture, and a second textile hose (ALs), woven in a single piece and coated on its outer wall with a release agent, preferably silicon, not adhering to the synthetic resin mixture, for introduction into the felt hose (FS). A method for mending a pipe, particularly a waste water pipe, preferably uses the arrangement described.

An eversion liner for lining a pipe includes an impermeable outer portion, inner and outer strength portions inside the impermeable outer portion, and a middle portion including at least one felt layer radially between the inner and outer strength portions. At least one of the inner and outer strength portions is formed from a unitary sheet of strength material that includes parallel chopped strands of fiber. The longitudinal edge margins of the sheet of strength material are positioned in overlapping engagement and joined together by joining structure. The parallel chopped fibers can be oriented transverse to the length of the liner. The joining structure can prevent reduction in a width of the overlapped edge margins as the liner expands during eversion.