Method for the production of filled containers from thermally conditioned preforms

US11707877B2 · kind B2 · utility

Assignee

• KHS GmbH · DE

Inventors

• Benjamin JAISER · Hamburg, DE
• Michael Linke · Hamburg, DE
• Deniz Ulutürk · Hamburg, DE

Key dates

• Filing date: Jun 28, 2022
• Grant date: Jul 25, 2023
• Expiry date: Jun 28, 2042

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2031/7158
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method for producing containers filled with liquid content from preforms made of thermoplastic material. The liquid content is fed as a pressure medium into thermally conditioned preforms during a forming and filling phase in a mold of one of a plurality of forming stations arranged circumferentially spaced apart on a common, continuously rotationally driven working wheel. A compensating device compensates for thermal consequences of centrifugal force acting on the liquid content fed into the preform during the forming and filling phase. The compensating device imparts a temperature profile to the preform in a circumferential direction, which is not point-symmetrical in relation to a longitudinal axis of the preform to produce a thermally differentiated partial circumferential region. The preform is inserted into the mold such that the thermally differentiated partial circumferential region faces in a radial direction of the working wheel.