Moulding unit for producing a support element for the human body, such as a vehicle seat

A moulding unit for producing a vehicle seat, comprising:

• a male component having engagement means for a felt or hull (HU) for the seat to be moulded,
• a female component delimiting a first moulding recessed area in which a first mixture to be solidified or hardened close to said felt or hull can be supplied,
• means for approaching-moving away said male component and said female component between at least one first open position and at least one first closing position for moulding or obtaining a felt or hull with a first foaming or a first moulding layer (S1),
• wherein said moulding unit delimits at least one second recessed area with dimensions different with respect to said first recessed area and extending for an entire length of the seat to be moulded, in said at least one second recessed area being suppliable a second mixture to be solidified and hardened,
• wherein said at least one second recessed area can be positioned in a second closed position close to said felt or hull (HU) moulded previously with a first foaming or first moulding layer alternatively to said first recessed area for moulding a second foaming or second moulding layer or spraying layer on the felt or hull moulded previously with a first foaming or first moulding layer, such that a felt or hull covered with two foamings or two moulding layers can be obtained.