Abstract: Injection mold comprising at least two mold sections (2, 3) between which a mold cavity is delimited. One (3) of the mold sections is provided with an ejector (42) for removing the product after injection molding. The other mold section (2) is provided with a gate (5). To enable the solidified sprue to be separated from the molded article, a bush (8) is also present in which the gate (6) likewise extends. This bush (8) is constructed to be movable to a limited extent relative to the mold section (2) in which the other part (5) of the gate is made. As a result the sprue can be pulled away from the article in a guaranteed manner. The movement of the bush (8) is controlled by a jack (16, 17). Consequently, controlled breaking of the sprue is possible and the advantage arises that, by releasing the pressure on the jack (16, 17), no force has to be overcome when the mold is closed.

Abstract: Method for forming an object (2) of thermosetting synthetic material in a mould (6), having at least one chamber (9), according to which method a mixture of components, which react and cure above a critical temperature, is put in liquid form in the chamber (9) through an inlet piece (1), which is provided with at least one filling duct (3,5) which opens into the chamber (9). The mixture is allowed to react and cure by making sure that the temperature of the mould (6) is higher than said critical temperature. The object (2) with the inlet piece (1) is removed from the mould (6). More particularly, the liquid mixture is inserted in the mould (6) through the inlet piece (1) which sticks through a wall (8) in the mould (6) and which extends outside the mould (6), by means of a casting nozzle (14) which is kept at a temperature which is lower than the critical temperature, whereby the extremity of the casting nozzle fits liquid-tight on the filling opening (4) of the above-mentioned inlet piece (1).