| 摘要 |
A chamber (6) is used having an end (7) open towards the inside of the mould and an injection conduit (14) emerging in the chamber (6). The following steps are carried out in succession: - displacement of a piston (38) which can move in the chamber (6), from a first position in which the piston blocks off the open end (7) of the chamber to a second position beyond the injection conduit (14); - injection of the coating material (C) into the chamber (6) via the injection conduit (14), under a first pressure; and - displacement of the piston (38) towards the said first position by applying to it a force corresponding, inside the chamber (6), to a second pressure (P2) greater than the said first pressure (P0). For a coating material (C) consisting of several components (A, B), the mixing of the components takes place during the injection step. <IMAGE> |
