Male mould element

A male mould element comprising a cooling circuit having first passage elements obtained in a first component of the male mould element and second passage elements extending in a second component of the male mould element, the first passage elements and the second passage elements being located around a longitudinal axis of the male mould element so that there exist a plurality of angular positions of the first component relative to the second component in which the first passage elements are in fluid communication with the second passage elements thereby defining an inlet passage for receiving a cooling fluid and an outlet passage for the cooling fluid, the inlet passage and the outlet passage being defined in an interface zone between the first component and the second component at two angularly distinct positions around the longitudinal axis, the male mould element having a forming surface for forming a base wall of an object, the cooling circuit further comprising an annular conduit extending around the longitudinal axis and being located between the forming surface and the second passage elements, the inlet passage being in fluid communication with the annular conduit and being located upstream of the annular conduit in the and circulating the cooling fluid to the annular conduit, the outlet passage being in fluid communication with the annular conduit and being located downstream of the annular conduit in the cooling circuit for removing the cooling fluid from the annular conduit, wherein the second component is removably fixed to the first component by a non-permanent connection, so that the first and second components are configured to be repeatedly disassembled from each other for cleaning or maintenance operations and then reassembled, and so that the second component is mounted so as to be non-rotatable relative to the first component during operation of the male mould element.