PROCEDURE FOR THE CONTINUOUS MANUFACTURE OF A DOUBLE WALL CORRUGATED TUBE WITH A HOSE, THE DOUBLE WALL CORRUGATED TUBE AND THE APPLIANCE TO CARRY OUT THE PROCEDURE.

摘要

Procedure for the continuous manufacture of a composite tube (10) composed of a smooth inner tube (39 '') and an outer tube (37 '') welded with it and provided with wave ridges (38), with a sleeve ( 41) of tube and a central longitudinal axis (18), with the following procedural steps: - an outer hose (37) is extruded concentrically with the central longitudinal axis (18); - the outer hose (37) is provided with a wavy with wave ridges (38) and wave valleys (40) by a partial vacuum applied from outside; - an inner hose (39) is extruded concentrically with the central longitudinal axis (18) in the outer hose (37); - the inner hose (39) is welded with the wave valleys (40) of the outer hose (37); - the outer hose (37) widens at specified distances by applying a partial vacuum from outside to manufacture a tube sleeve (41), - from the inside gas is applied with a pressure above the atmospheric pressure in the inner hose (39) widening it and pressing it over the entire surface against the widened area of the outer hose (37) to terminate the tube sleeve (41), and - between the tube sleeve (41) and a valley (40) of Adjacent wave forms a molded transition section (61, 64) of the inner hose (39) and the outer hose (37) and directed outwardly in relation to the longitudinal central axis (18), characterized in that the section (61 , 64) transition is deaerated in the area between the inner hose (39) and the outer hose (37) to an adjacent wave crest (38).