Patent · US Active

Method for the production of hollow bodies from thermoplastic plastic

US8440132B2 · kind B2 · utility

0Cited by

4References

11Claims

0Family size

Assignee

Kautex Textron GmbH & Co. KG · DE

Inventors

Joachim Eckhardt · Bonn, DE
Matthias Franke-Maintz · Hennef (Sieg), DE
Gerd Wolter · Rübhausen, DE

Key dates

Filing date	May 7, 2008
Grant date	May 14, 2013
Priority date	—
Expiry date	Feb 8, 2029

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 the production of hollow bodies from thermoplastic plastic. The method comprises the extrusion of at least two sheet-like preforms consisting of thermoplastic plastic, the introduction of the preforms into a preferably multipart molding die with a molding cavity which at least partially defines the contour of the hollow body to be manufactured, and the shaping of the preforms inside the die, using a vacuum and/or gas pressure in the first heat of the material. The method is distinguished in that at least two preforms to be shaped into a hollow body and to be connected are extruded successively, that is to say sequentially, in time and are shaped simultaneously.

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