| 摘要 |
The invention describes a process for the production of a polymer moulding (2) with an internal space (3), in which a main cavity (9) is entirely filled with melt (14), and after solidification of the melt (14) at the cavity walls (20), at one end of the main cavity (9), liquid (16) is passed under pressure through a feed (15) into the melt (14), and, at the opposite end of the main cavity (9), an ancillary cavity (10) is opened, thus displacing melt (14) from the moulding (2) into the ancillary cavity (10) and producing the internal space (3) in the moulding (2), where the ancillary cavity (10) has a discharge opening (18). Attached to the discharge opening (18), there is a discharge cavity (24), where through filling of the ancillary cavity (10) with melt (14) a portion thereof is passed under pressure through the discharge opening (18) into the discharge cavity (24), and the liquid (16) is passed under pressure through the discharge opening (18), and the melt (14) located behind this is passed under pressure into the discharge cavity (24). |
