Procedure for producing hollow bodies of thermoplastic material

US8329082B2 · kind B2 · utility

Assignee

• Kautex Textron GmbH & Co. KG · DE

Inventors

• Matthias Borchert · Bonn, DE
• Gerd Wolter · Rübhausen, DE
• Harald Lorenz · Bad Neuenahr-Ahrweiler, DE
• Dirk Eulitz · Bonn, DE
• Timo Kramer · Hirz-Maulsbach, DE
• Markus Hutzen · Sankt Augustin, DE

Key dates

• Filing date: Oct 5, 2010
• Grant date: Dec 11, 2012
• Expiry date: Oct 5, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/1038
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention concerns a process for the production of hollow bodies of thermoplastic material, in particular a process for the production of fuel tanks of plastic material. In the process according to the invention preforms in web or band form of plasticized plastic material are shaped in a multi-part tool forming a mold cavity by expansion of the preforms and causing them to bear against the internal contour of the mold cavity. The process firstly includes the production of two mutually complementary intermediate products in the form of shell portions. Then respective built-in fitment components are secured to the respective insides of the shell portions, which face towards each other in the installation position, wherein at least some built-in fitment components of mutually complementary shell portions are respectively of mutually complementary configuration, in the sense that they can be joined to provide an assembled component or to provide a functional unit. The shell portions are assembled in such a way that the mutually complementary built-in fitment components engage into each other and/or come into operative connecting relationship with each other.