Patent · US Active

Method for producing hollow bodies from thermoplastic material and device for carrying out the method

US8603280B2 · kind B2 · utility

5Cited by

2References

9Claims

0Family size

Assignee

Kautex Textron GmbH & Co. KG · DE

Inventors

Matthias Borchert · Bonn, DE
Carsten Elsasser · Pulheim, DE
Christoph Mehren · Rübhausen, DE

Key dates

Filing date	Jun 24, 2011
Grant date	Dec 10, 2013
Priority date	—
Expiry date	Jun 24, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/7172
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for producing hollow bodies from thermoplastic material, comprising the molding of at least two sheet-like, web-shaped preforms of plasticated thermoplastic material in a multi-part tool forming a cavity to form two complementary shells, and also the joining together of the shells to form a substantially closed hollow body, wherein the preforms are brought between open parts of the tool which each have part-cavities, the parts of the tool are then closed against a tool separator arranged between the preforms, and the preforms are inserted into the part-cavities with the use of differential pressure and molded. In a subsequent separate method step, the tools are reopened and internal components of the hollow body to be produced are fastened to the shells. Finally, the shells are joined together by reclosing the tools to form a closed hollow body.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.