Plastic container and method for using the same

US6367503B1 · kind B1 · utility

Assignee

• Mannesmann VDO AG · DE

Inventors

• Dieter Keller · Aschaffenburg, DE
• Martin Maasz · Pocking, DE
• Karl Eck · Frankfurt, DE
• Christian Kochsmeier · Dortmund, DE

Key dates

• Filing date: Apr 3, 2000
• Grant date: Apr 9, 2002
• Expiry date: Apr 3, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86324
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A plastic tank comprises a line which is connected at least in certain sections to its wall and is formed in one piece with the plastic tank. For its production, the plastic tank is injection-moulded between a hollow mould and an inner mould inserted into the latter, the mould having a recess, in which a sprue body is formed as the starting material for the line. Before this sprue body can solidify completely, material is blown out from it by means of the internal gas pressure or pressure blowing technique via channels provided in the mould, so that the required line is created there. The lines may be arranged on the outside and/or inside and parallel and/or at an angle to the tank walls.