The upper part of the mold is pouring area, and the lower pad of it is the mold cavity.

Two positive masters are required for each mold, one being formed to define the upper part of the mold and the other the lower part of the mold.

The two halves (5a, 5b) of the upper mould part (5) are closed and the lower mould part is moved into its closed position.

The article forming position corresponds to when the top mold portion is overlying the bottom mold portion for molding an article.

The upper portion of the mold may be pressed against the predetermined quantity of molten composite material and closing on the lower portion of the mold to form the article.

The products incorporate a reinforcing mesh which is suspended in the mould from at least two attachment points so that a portion extends from the top of the mould.

The mould is arranged so that the thicker wall of the casting is cast in the upper part of the mould remote from the gate and the thinner wall is cast in the lower part of the mould near the gate.

The upper mold section includes a pressure ring (13) having an upper register surface (20) that selectively engages segment register surfaces (21) of the segments (22) as the tire mold is closed.

The molding material loading position corresponds to when the top mold portion is non-overlying the bottom mold portion so that the molding material can be gravity deposited therein.

The invention concerns in particular a mould comprising a wall (2) permeable to the mineral fibre suspension medium, characterised in that said wall permeability increases from the mould lower part to its upper part.

The reactive compound is placed within the thin film inner layer and then the top portion of the mold is inserted to form the cavity.

The fixture pin is actuated towards the pre-preg plies when a flowable material fills a molding cavity in the upper portion of the mold.

The shield (2) is positioned concentrically to the casting vertical axis and is fixed on the mold upper portion or on a hanger.

Arch-forming void forms are inserted into the upper part of the mould, and the base portions (4) are provided with coupling members (5).

This makes it possible for the more liquid portion of the metal to reach the top area of the mold (1), post-feeding to the latter being possible to compensate for metal contraction during cooling.