Patent ID: 8336881

Claim:
A method of using a mould to manufacture a finished plaque comprising: providing said mould having a first and second half, each half having an impression with a shape complementary to that of the exterior of the finished plaque to be produced, each half having an internal peripheral recess defined by a wall of each impression half extending perpendicular to the parting plane of the respective mould half, said mould further having an inclined wall that defines an inclined outer edge of the finished plaque, the internal peripheral recess located between the parting plane and the inclined wall; arranging in said mould two plaque blanks of said finished plaques which are placed against one another with the faces thereof facing one another, the total thickness of said blanks being smaller than that of the finished plaque, an end of each plaque blank contacting the corresponding internal peripheral recess of the respective mould half; holding the periphery of said plaque blanks within said mould; injecting a connection material under pressure between said facing faces of said two plaque blanks at a pressure and temperature suitable for deforming said plaque blanks against the surface of the impression of the mould and causing the end of each blank plaque to break contact with the internal peripheral recess, creating space for the connection material to be filled; deforming said plaque blanks against the impression of the mould such that said connection material is confined to an area between said facing faces of said two plaque blanks and the plaque blanks deform and wedge against the inclined wall to form the outer edge in the finished plaque; and removing the finished plaque thus obtained from the mould after a predetermined injection moulding time and cooling said finished plaque.