An apparatus (1) and method for introducing a foil (10) to be laminated to an inner surface (15) of an elongated duct (6), wherein the foil is providable on an axle (2), the axle being movable from a first position outside of the duct, where the foil is provided on the axle, to a second position inside the duct where the foil is in position for lamination to the inner surface of the duct.

A pipe liner has an elongate duct of thin laminated thermoplastic layers and remains relatively flexible and folded to a flat form. In this form, opposing sides of the duct are pressed into close proximity aided by folding of the duct, so the liner can be stored efficiently. In use, the liner is inserted into a pipe. The liner is subsequently heated and pressed against the inner surface of the pipe to form a close fit. Once the liner cools, it sets in place providing a close fitting pipe lining. In order to ensure adequate and even heating of the pipe liner during installation, heating is provided within the liner. The heating may comprise: a plurality of conductive filaments; electromagnetic susceptor material; or a plurality of magnetic particles.

A compression apparatus (10) for compressing a tubular structure (12) to be formed into a hollow structure (20) such as a pipe comprises contact elements (60) arranged in two sets, (61, 62). The contact elements (60) are adapted to move along a compression section (41) in a coordinated sequence, whereby a portion (12a) of the tubular structure (12) within the compression section (41) is compressed between pairs (63) of opposed contact elements. The apparatus (10) includes registration means (110) for causing respective pairs (63) of opposed contact elements (60) to be maintained in registration with each other while moving along the compression section (41).

A method for relining a pipeline includes providing and using a composition that includes (a) a resin crosslinkable by action of a photoinitiator that is activated with actinic light, (b) a resin crosslinkable by action of a co-hardening compound; (c) a photo-initiator compound that can be photoactivated by irradiation with actinic light; and (d) a co-hardener compound added before use that is a semilatent co-hardener or a co-hardener at room temperature. A kit for relining a pipeline according to this method includes (1) a container containing (a), (b) and (c); (2) a container containing (d); (3) a substrate for impregnation with the composition resulting from mixing the contents of container (1) and container (2); and, optionally, (4) a source of actinic light and a generator of a flow of gas or liquid at adjustable pressure.

The invention relates to a system (10) for curing and/or inspecting a pipeline lining (30) positioned in a pipeline (20), the pipeline lining (30) comprising an outer plastics material layer and an inner fiber composite layer, the fiber composite layer comprising a plastics material which is to be cured and/or which is at least partially cured. In accordance with the invention, the system (10) comprises at least one high-frequency unit (40) which comprises at least one microwave-generator unit (41) and at least one microwave-transmitting antenna (42) for curing a plastics material which is to be cured, at least the at least one microwave-transmitting antenna (42) being movable in the pipeline (20) by means of a transporting device (60).

A method for assembling a liner in a tube includes placing a liner in a tube, and heating a portion of the liner, called a heated portion, with a local heat source. The heated portion is not more than a third of a total length of the liner. The heated portion is expanded radially outwards so that the heated portion abuts against an inner wall of the tube. The local heat source is repeatedly advanced longitudinally along a desired length of the liner to expand the heated portion radially outwards so that the heated portion abuts against the inner wall of the tube for the desired length.