| 摘要 |
The machine for the production of receptacles of plastic material comprises a heating device and a blow molding device (12). The receptacles are produced from preforms (2) whose neck (36) is held by its outer surface in supports (7). In the blow molding device (12), a molding member (45) is disposed around the preform (2) and a blowing member (54) is applied against the support (7). A directional member (50) is arranged in a longitudinal passage (29) of support (7) and adapted to create a directed jet or flux of fluid under pressure generating a longitudinal stretching of the preform and of the receptacle in progress of formation. The fluid in excess can be released by exhaust means (58, 60). Because of these features, it is possible to obtain a very precise manufacturing of receptacles without the assistance of a drawing rod, a high cleanliness, even sterility of the produced receptacles and an uncomplicated structure and inexpensive construction of the machine.
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