Pirelli Cavi E Sistemi S.p.a.

Prysmian S.p.a.

Pirelli Tyre S.p.a.

Pirelli Pneumatici S.p.a.

Prysmian Cavi E Sistemi Energia S.r.l.

Pirelli S.p.a.

Giovanni Pozzati

Sergio Belli

Alberto Bareggi

Luca Balconi

Paolo Veggetti

Marcello Del Brenna

Gaetano Lo Presti

Gaia Dell'Anna

Ignazio De Gese

Silvio Frigerio

Rodolfo Noto

Andrew Maunder

Fabrizio Cristofani

Paolo Liboi

Angelo Giuseppe Locatelli

Giuseppe Colombo

Pierluigi Folcini

Massimo Loprevite

Luca Castellani

Claudio Bosisio

Enrico Maria Consonni

Luigi Caimi

Pietro Anelli

Luca Giorgio Maria De Rai

Angelo Sala

Rodolfo Sica

Claudio Lacagnina

Luigi De Martino

Vincenzo Crisci

Roberto Rungo

Gaia Dell′Anna

Fulvio Loro

Florent Etienne Philippe Pelle

In one example, an apparatus for jointing power cables includes a mold extending along a longitudinal axis, and having a feeding inlet and being made of two halves forming a longitudinal pass-through seat for receiving the cables. An extruder is connected to the feeding inlet. A heating system and a cooling system is associated with the mold. A measuring system for detecting temperature or pressure includes a plurality of probes for detecting temperature or pressure.

Process for jointing cables

A power cable has an insulated conductor; a copper water barrier, in form of a tube with a welding line, surrounding each insulated conductor; and a polymeric sheath surrounding each copper water barrier. The copper water barrier has a thickness and the polymeric sheath has a thickness such that a ratio between the thickness of the copper water barrier and the thickness of the polymeric sheath is 0.15 at most.

High voltage power cable with fatigue-resistant water barrier

Process for manufacturing a power cable includes: providing a power cable core having an electric conductor; providing a copper foil; providing a protective strip over the power cable core, the protective strip having a radially inner and outer surface and being made of copper with a coating; folding the copper foil around the power cable core so as to bring two longitudinal copper foil rims to contact one to the other; welding the two contacted longitudinal copper foil rims thus obtaining a copper sheath in form of a tube with a welding seam; reducing the diameter of the copper sheath to put it into direct contact with the power cable core and the protective strip; heating the protective strip and the copper sheath at a temperature higher than the melting temperature of the coating of the strip so that the coating fuses in the welding seam.

Process for manufacturing a submarine power cable and power cable so manufactured

An expandable bladder has at least one first layer of butyl material and one second layer of silicone material, radially external to the first layer. The first and second layers have an undulated interface profile defining mechanical-engagement elements between the first and second elastomer materials. A process for manufacturing bladder as well as a tire molding and vulcanizing apparatus incorporating the bladder.

Expandable bladder for tyre-curing apparatuses, a manufacturing method thereof, and a process for manufacturing tyres for vehicle wheels

An underwater optical fiber cable includes two end portions, an extruded metal tube, at least one optical fiber and a polymeric sheath surrounding the extruded metal tube. The at least one optical fiber is housed in loose configuration in the extruded metal tube. The cable includes a controlled cathodic protection system connected to one of the end portions of the underwater cable and includes an anode bed arranged outside the underwater cable and an electric connection connecting the anode bed to the extruded metal tube of the underwater cable at one of the end portions of the underwater cable.

Underwater optical fibre cable

An expandable bladder has at least one first layer of butyl material and one second layer of silicone material, radially external to the first layer. The first and second layers have an undulated interface profile defining mechanical-engagement elements between the first and second elastomer materials. A process for manufacturing bladder as well as a tire molding and vulcanising apparatus incorporating the bladder.

A robotized arm drives in rotation a drum carrying a tire being processed and conveniently moves it in front of a delivery nozzle supplying a continuous elongated element of elastomer material in order to form a tire component. The delivery nozzle is connected through at least one selecting valve with two or more extruders, each designed to supply a respective blend. The selecting valve connects the delivery nozzle with the outlet of one of the extruders, breaking communication between the nozzle and the other extruders. The outlets of the non-active extruders can be connected with at least one outlet duct. It is thus possible to replace the type of blend used for manufacturing the tire component without the article of manufacture having to be moved away from the delivery nozzle.

Method and an apparatus for manufacturing tyres

An electrical cable includes a conductor, an outer sheath, and a self-repairing material layer between the conductor and outer sheath. The self-repairing material layer is distributed around the conductor in a discontinuous manner. An anchor portion is formed between the conductor and the outer sheath.

Electrical cable with self-repairing protection and apparatus for manufacturing the same

The present invention concerns a process for producting cables, in particular cables for the distribution of electrical energy or cables for telecommunications, more particularly, cables having at least one covering layer comprising a composition of high viscosity. More particularly, the present invention concerns cables having at least one covering layer comprising a polymeric composition comprising a mineral filler capable of imparting one or more specific properties to the aforesaid cables. In accordance with the present invention, said production process comprises the stages of: conveying at least one conducting element inside of an extruder; feeding the polymeric material, optionally premixed with other components of said composition, into said extruder, filtering the material transferred and plasticized by the screw of said extruder; depositing said material onto said at least one conducting element, the filtration operation being performed with a filtration efficiency greater than 0.8, preferably greater than 0.9. The present invention concerns, in addition, an apparatus for the purpose of performing the production process mentioned above.

Process for the production of a cable and device for performing this process

Electric cable (), in particular for power transmission or distribution at medium or high voltage, comprising a metallic screen () and a water swellable layer () capable of forming a barrier to the water penetration provided in a position radially external to said metallic screen (). Said water swellable layer () is made of an expanded polymeric material in which a water swellable material preferably in the form of powder, is embedded.

Electric cable resistant to water penetration

An apparatus for continuously introducing a substance in liquid phase into plastics granules includes a supporting structure adapted to support in series and in substantial vertical alignment a feeding section, at least one mixing chamber, and at least one drying chamber. The feeding section is provided with means for feeding the granules to at least one spraying chamber provided with means for spraying the substance onto the granules. The at least one mixing chamber of the granules partially or totally coated with the substance includes substantially static mixing means supported in the at least one mixing chamber. The at least one drying chamber is adapted to receive a predetermined amount of the granules coated with the substance. The substantially static mixing means may include, for example, at least one static mixer, a plurality of mixing bars, or at least two superimposed groups of mixing bars.

Apparatus for continuously introducing a substance in liquid phase into plastics granules

A method for continuously introducing a substance in liquid phase into plastics granules comprising: a) feeding a substantially continuous flow of the plastics granules to at least one substantially static spraying chamber, b) spraying the substance in liquid phase onto the plastics granules, c) passing the granules partially or totally coated by the substance in liquid phase by a substantially static mixing means supported in at leas one mixing chamber provided downstream of the spraying chamber, d) submitting the mixed granules to drying for a time sufficient to allow a substantially complete absorption of the substance in liquid phase by the granules.

Method and apparatus for introducing in continuous a substance in liquid phase into plastics granules

A method and apparatus for preheating the conductor elements of cables with extruded insulator essentially by forced thermal convection. Particularly for conductors with metal tape reinforcement, such as for example Milliken conductors, where it has been found that the traditional magnetic-induction heating is not satisfactory since the tape reinforcement shields the elements of conductors.

Method and apparatus for pre-heating the conductor elements of cables with extruded insulators, in particular conductors with metal tape reinforcements

A process for producing cables, in particular cables for the distribution of electrical energy or cables for telecommunications, more particularly, cables having at least one covering layer having a composition of high viscosity. cables with at least one covering layer are made from a polymeric composition having a mineral filler capable of imparting one or more specific properties to the cables. A production process includes conveying at least one conducting element inside of an extruder; feeding the polymeric material, optionally premixed with other components of the composition, into the extruder; filtering the material transferred and plasticized by the screw of said extruder; and depositing the material onto the at least one conducting element, the filtration operation being performed with a filtration efficiency greater than 0.8, preferably greater than 0.9.

A cable for electric power transmission, electric power distribution or telecommunications, having an inner layer including a self-repairing material. The self-repairing material has properties including a predetermined cohesiveness and a controlled flowability. In the event of a discontinuity in at least one of the cable coating layers, these properties assist in reestablishing the continuity of the cable coating layers.

Growing community of inventors

Sens, France

Giovanni Pozzati