Pressurized molding of composite parts

An apparatus (10) for molding a composite body (24) in the form of a composite part, said apparatus comprising: a lower mold (12) comprising a surface (26) of inflexible mold on which said composite body is placed (24 ); an elastic layer (14) of the upper mold comprising a surface (27) of the mold covering said surface (26) of the lower mold to provide a molding cavity (28) in which said composite structure (24) is located during molding said composite structure (24) as said composite part, said perimeter having a layer (14) of the upper mold; an elastic layer (16) of pressure located above said layer (14) of the upper mold, said layer (16) of pressure a perimeter that is sealed to said layer (14) of the upper mold to provide a chamber (30) located between said pressure layer (14) and said upper mold layer (16) of pressure; an orifice (18) pressurization, to allow application of pressure to said chamber (30) pressure in order to increase the volume of said chamber (30) pressure, in that the increase in volume of said chamber (30) pressure increases the surface area of ​​said layer (16) of pressure; a flexible layer (20) of expansion control, located above said layer (16) to limit the pressure increase in surface area of ​​said layer (16) of pressure; and a closure (22) perimeter retention located around the perimeters of said layer (14) of the upper mold, said layer (16) of pressure and said layer (20) control expansion, to prevent said perimeters moving into or out of said surface (26) of the lower mold during application of pressure to said pressure chamber.