Method and device for forming plastic preforms with cross-section change of a volume flow

US10155335B2 · kind B2 · utility

Assignee

• KRONES AG · DE

Inventor

• Alexander Dachs · Regensburg, DE

Key dates

• Filing date: Oct 28, 2015
• Grant date: Dec 18, 2018
• Expiry date: Sep 21, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/10
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method for forming plastic preforms into plastic bottles, wherein the plastic preforms are transported along a predefined transport path by a transport device in a plurality of forming stations arranged on the transport device, and at least at times during the transport, bombarded with a fluid medium for their expansion, wherein the plastic preforms in a first method step are bombarded by the fluid medium at a first pressure (p1) and in a further method step, temporally following the first method step, bombarded with the fluid medium at a second pressure (p2), wherein the second pressure (p2) is higher than the first pressure (p1). At least at times during the bombardment of the plastic preforms at the first pressure (p1), a volume flow of the fluid medium entering the container is increased.