| 摘要 |
The invention relates to a process for producing blow moulded plastic parts. The blowing medium used is an inert gas such as nitrogen, which is fed into a deformable preform in a blow mould in order to blow it up and subsequently cool it from within. According to the invention, the nitrogen introduced as a blowing medium consists substantially, and preferably exclusively, of warm, dry nitrogen which has previously been vaporized during the internal cooling of a blown-up preform, the blow mandrel and blow mould being flushed with warm, dry nitrogen when the latter is open. The internal cooling is carried out at a higher inlet pressure than that of the blowing-up processes. The invention also relates to a device for implementing the process.
|
