Kautex Maschinenbau Gmbh

Sig Kautex Gmbh & Co. Kg

Michael Pappert

Peter Kluesener

Martin Balzer

Roger Stehr

Peter Klusener

Alfred Jira

Willi Doehmen

Wolfgang Kummer

Werner Daubenbuechel

Heinz-Werner Eckerskorn

Lutz Forst

Andreas Hollweg

Dieter Hess

Willi DÖHMEN

Peter Klüsener

In an extrusion head and an extrusion method for the production of a tubular multilayer preform the extrusion head includes at least two feed paths for feeding plasticised plastic material from one or more extruders to an annular passage arrangement. The annular passage arrangement includes mutually concentric annular passages forming mutually separate flow paths for the various layers of the preform. An annular gap nozzle has an annular gap communicating with the annular passage arrangement, and at least one flow passage communicates with an annular passage of the annular passage arrangement, for the introduction of a translucent viewing strip. The flow passage communicates with the annular passage in question upstream of the annular gap in the region of separation of the flow paths.

Extrusion head

A process for the production of dish-shaped moldings or hollow bodies of thermoplastic material comprises the step of producing an at least approximately tubular preform by the extrusion of thermoplastic material. The preform is axially divided to form at least one single-layer web of material which is removed from the extrusion head by being engaged by means of a manipulator which spreads and/or straightens the web transversely with respect to the extrusion direction. The web is then transferred to a molding tool by a manipulator for it to be put into its final form in its first heat in the molding tool.

Process for producing dish-shaped moldings of thermoplastic material

A double-wall fuel container of plastic material is composed of at least two shell portions which are welded together. The half-shell portions are each in the form of double-wall blow moldings, with a gap being kept free at least in a region-wise manner between the walls of the blow moldings.

Double-wall fuel container

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Eitorf, Germany

Michael Pappert