Brugg Rohrsysteme Gmbh

Brugg Rohr Ag Holding

Brugg Rohrsystem Ag

Christian Dudat

Christian Frohne

Joern Homann

Thomas Albrecht

Marc Oliver Herbst

Jörn Homann

Holger Klee

Jens Francke

Le Chen

A method for coating a pipe involves applying a coating material of cellular structured extruded thermoplastic material to the pipe and enclosing it on the outside by an outer covering layer of compact plastic. In an extrusion head, the annular opening for supplying coating material can be adjusted to a desired temperature by a region having coolant channels separated from the annular opening by an annular heat exchange surface. Before being applied to the pipe, the flowable coating material is guided along the heat exchange surface and cooled to a temperature just above the solidification temperature thereof. After the coating material leaves the annular opening, the coating material expands in a controlled manner, widening the outer covering layer depending on the adjusted temperature of the coating material, until the coating material begins to solidify. The outer covering layer surface condition can correspond to or be different from the pipe.

Method and apparatus for coating a pipe

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Garbsen, Germany

Christian Dudat