| 摘要 |
A process for blow-molding hollow bodies from thermoplastic synthetic resin wherein, in addition to control to accurately position an extruder thermoplastic melt preform in the blow mold and to maintain a constant weight of the extruded preform, on the program curve which itself is a superimposition of the profile curve of the preform and a base gap determined in accordance with the nozzle gap width through which the preform is extruded, there is superimposed a correction strip which can be varied depending upon material distribution changes as a result, for example, of sag of the preform.
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