A method for preparing an HVDC cable for jointing or termination includes the step of providing a section of an HVDC cable comprising a conductor surrounded by a first semiconducting layer, and at least one insulation layer of a first polymer material surrounding the first semiconducting layer, where the insulation layer comprises conductive volatile by-products. A tape of a second polymer material is provided, where the additional layer comprises conductive volatile by-products. The tape is lapped onto the insulation layer thereby forming an additional layer. Heat is applied to crosslink the additional layer and redistribute the conductive volatile by-products.

The present disclosure relates to a heat shrinkable wrap comprising a body comprising two longitudinal edges and two transverse edges; a first locking feature which expands along a first longitudinal edge and a second locking feature which expands along a second longitudinal edge; wherein the body comprises a heat shrink material; wherein the first locking feature at the first longitudinal edge comprises at least two first locking elements which expand along the first longitudinal edge and the second locking feature at the second longitudinal edge 8, 80 comprises at least two second locking elements which expand along the second longitudinal edge; wherein the first locking elements and the second locking elements are adapted for engaging with each other, for establishing, in an engaged state, at least two connections between the first locking feature and the second locking feature; wherein, when the connection between the first locking feature and the second locking feature is established, the body and the locking features form a tubular structure.

A tool for fixing a protective textile sleeve about an elongate member contained therein and method of use thereof is provided. The tool includes a clamp assembly having opposed clamp members attached to one another for pivotal movement relative to one another between an open state and a closed state. The clamp members have clamping surfaces, wherein at least one of the clamping surfaces has at least one outlet. A fluid source is arranged in fluid communication with the at least one outlet, and a heat source is configured to heat fluid from the fluid source to create steam. The steam is dispensed outwardly from the at least one outlet to cause an adhesive on the sleeve to become activated to bond with an adjacent abutting surface.

A heat-recoverable component includes a tube-shaped or cap-shaped base material layer having heat shrinkability, and an adhesive layer formed on an inner circumferential surface of the base material layer. The adhesive layer includes a low-viscosity adhesive portion and a high-viscosity adhesive portion disposed between the low-viscosity adhesive portion and an opening of the base material layer. The low-viscosity adhesive portion has a shear viscosity of 10 Pa.Math.s or less at a shear rate of 1 s.sup.1 at a heat shrinkage temperature of the base material layer. The high-viscosity adhesive portion has a shear viscosity of 100 Pa.Math.s or more at a shear rate of 1 s.sup.1 at the heat shrinkage temperature of the base material layer. At the heat shrinkage temperature, a ratio of the shear viscosity of the high-viscosity adhesive portion to the shear viscosity of the low-viscosity adhesive portion is 15,000 or less.

A sealing system for forming an environmentally sealed joint with an elongate member includes a tubular substrate, a pre-expanded cover unit, and a flowable sealant. The tubular substrate includes an integral guide feature and defines a substrate bore to receive a portion of the elongate member. The pre-expanded cover unit includes a holdout and a tubular cover sleeve. The holdout includes a helically wound strip forming a tubular holdout body and a rip cord. The holdout body defines a holdout passage extending axially therethrough. The tubular cover sleeve is mounted on the holdout body. The holdout maintains the cover sleeve in a radially elastically expanded state. With the elongate member positioned with a portion thereof extending from the tubular substrate and a layer of the sealant mounted on an outer surface of the tubular substrate and/or on an outer surface of the elongate member, the pre-expandable unit can be mounted around the layer of sealant and the holdout can then be removed from the cover sleeve by withdrawing the rip cord through the holdout passage between the layer of the sealant and the holdout body to remove the holdout body and thereby permit the cover sleeve to radially contract about the tubular substrate and the elongate member, and the guide feature serves to prevent or inhibit the rip cord from contacting the layer of the sealant as the rip cord is withdrawn through the holdout passage.

Adaptable heat shrink tubing is able to be applied over existing in service wires or where tubing would not normally be able to be passed over the end of a connector.

A multilayered heat-recoverable article according to the present invention includes a cylindrical base material layer and an adhesive layer disposed on an inner peripheral surface of the base material layer, in which the base material layer contains a polyethylene and an oxidation inhibitor, the adhesive layer contains an ethylene-vinyl acetate copolymer and an oxidation inhibitor, the oxidation induction temperature of the base material layer is 255 C. to 270 C., and the oxidation induction temperature of the adhesive layer is 255 C. or higher.

A heat-recoverable component includes a tube-shaped or cap-shaped base material layer having heat shrinkability, and an adhesive layer formed on an inner circumferential surface of the base material layer.

The adhesive layer includes a low-viscosity adhesive portion and a high-viscosity adhesive portion disposed between the low-viscosity adhesive portion and an opening of the base material layer.

The low-viscosity adhesive portion has a shear viscosity of 10 Pa.Math.s or less at a shear rate of 1 s.sup.1 at a heat shrinkage temperature of the base material layer.

The high-viscosity adhesive portion has a shear viscosity of 100 Pa.Math.s or more at a shear rate of 1 s.sup.1 at the heat shrinkage temperature of the base material layer.

At the heat shrinkage temperature, a ratio of the shear viscosity of the high-viscosity adhesive portion to the shear viscosity of the low-viscosity adhesive portion is 15,000 or less.

A tool for fixing a protective textile sleeve about an elongate member contained therein and method of use thereof is provided. The tool includes a clamp assembly having opposed clamp members attached to one another for pivotal movement relative to one another between an open state and a closed state. The clamp members have clamping surfaces, wherein at least one of the clamping surfaces has at least one outlet. A fluid source is arranged in fluid communication with the at least one outlet, and a heat source is configured to heat fluid from the fluid source to create steam. The steam is dispensed outwardly from the at least one outlet to cause an adhesive on the sleeve to become activated to bond with an adjacent abutting surface.

A heat-shrinkable tube according to an aspect of the present disclosure includes a base layer that is tubular and that covers outer peripheries of a plurality of electric wires, and a plurality of ridges that are formed on an inner peripheral surface of the base layer and that extend in an axial direction of the base layer.