Method of anchoring a connector element, a machine for carrying out the method and a connector element anchoring kit

A connector element anchoring kit comprising a connector element configured to be anchored in a receiving object, the connector element being made of a relatively non-thermoplastic material and having a body with a distal end for inserting into a mounting hole of the receiving object in an insertion direction along an insertion axis, and a proximal end provided with a first connector interface for engaging with a mating second connector interface, the connector element anchoring kit comprising a sleeve comprising a thermoplastic material, the sleeve having a distal end and a proximal end, and being configured to receive and enclose the connector element, and being unbonded to the connector element, wherein the connector element at its distal end has a distal end collar extending radially, with respect to the insertion axis, from the body, and wherein the distal end collar is perforated to increase the flow of liquefied thermoplastic material to a distal side of the distal end collar.