Device for blow molding containers

US9751249B2 · kind B2 · utility

Assignee

• KHS CORPOPLAST GMBH · DE

Inventors

• Michael Litzenberg · Geesthacht, DE
• Rolf Baumgarte · Ahrensburg, DE
• Margit Kiefer · Hamburg, DE
• Frank Lewin · Tangstedt, DE
• Michael Linke · Hamburg, DE

Key dates

• Filing date: Jul 11, 2014
• Grant date: Sep 5, 2017
• Expiry date: Sep 11, 2034

Classification

• Technology area (CPC —): General

Abstract

A device for blow molding containers. Preheated preforms made of a thermoplastic material are transferred within a blow molding machine to a blowing device. In the region of the blowing device, the preforms are shaped into containers by the blow molding by a blowing pressure. In the region of the device for blow molding containers, a blowing nozzle seal is arranged, which is brought against a support ring of the preform. The blowing nozzle seal is formed by a sealing element and a support sleeve. The blowing nozzle seal is first mechanically preloaded in relation to the support ring after contact with the support ring and then is further loaded pneumatically. An accommodating space that surrounds the mouth section of the preform is thereby provided, which accommodating space has substantially the same pressure as the interior of the preform in order to avoid deformation of the mouth section.