Process for manufacturing the elastomeric sleeve of a joint for electrical cables and manufacturing apparatus thereof

A process for manufacturing an elastomeric sleeve of a joint for electrical cables, said sleeve comprising:

• an electric field-control element;
• an electrical insulating element surrounding said electric field-control element;
• and
• at least two stress control screens positioned at the axial ends of said electrical insulating element,
• said process comprising the steps of:
• introducing said electric field control element and said stress control screens into a mould provided for moulding said electrical insulating element made of an electrical insulating material;
• prior to introducing said electric field control element and said stress control screens into said mould, providing said electric field control element and said stress control screens on a supporting element;
• filling with said electrical insulating material the space radially external to said electric field-control element and the space between said electric field-control element and said stress control screens, the step of filling being carried out during the step of introducing;
• and
• curing said electrical insulating material to obtain said electrical insulating element of said elastomeric sleeve.