Patent ID: 9718567
Date: 2017-08-01
CPC Classifications: B29C,B29D,B65B,B67B

Claim:
1. A method for producing filled containers from preforms made of a thermoplastic material, the method comprising the steps of: at least thermally conditioning a preform; reshaping the preform during a shaping and filling phase in a mold under pressure of a supplied filling substance to form a particular container under a shaping and filling pressure, whereby the preform during the shaping and filling phase at least for a time is fed through a stretching rod and/or stretched in an axial direction, and whereby at least at an end of the shaping and filling phase, the particular container has an internal pressure matching the shaping and filling pressure; and depressurizing the shaped and filled container to atmospheric or ambient pressure after the end of the shaping and filling phase in an at least two-stage depressurization phase, wherein a duration of the at least two-stage depressurization phase of the particular containers from the shaping and filling pressure to the ambient pressure is controlled depending on a temperature of the filling substance, whereby the duration of the depressurization and/or the duration of at least one partial phase of the depressurization increases with a rising temperature of the filling substance.