Process and apparatus for the continuous production of an irrigating tube
AssigneeDrossbach GmbH & Co. KG
InventorsFritz P. Sorgel, Karl Dietrich
Life of this patent
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Abstract
A process for the continuous production of an irrigating tube having trickling elements embedded between an inner tube and an outer tube; provides that, after extrusion of an inner tube and subsequent cooling of the tube, the latter is perforated at regular intervals to produce inlet orifices, that the tube is subsequently heated up again, at least in the region of the perforations, and that thereafter a trickling element is pressed into the surface of the inner tube in each case at the heated-up perforation points and is thereby connected to the inner tube. The inner tube and trickling elements are subsequently surrounded by an outer tube, in which outer outlet orifices are made at the points of the trickling elements.
Claims9
A process for the continuous production of an irrigating tube having trickling elements embedded between an inner tube and an outer tube, comprising the steps of:
- after extrusion and subsequent cooling of the inner tube, perforating the inner tube at regular intervals in the axial direction, subsequently reheating the inner tube, at least in the region of the perforations, pressing trickling elements into the surface of the inner tube at the heated perforation points to connect the trickling elements to the inner tube, subsequently extruding an outer tube around the inner tube provided with the trickling elements, thereby welding the outer tube with the trickling elements, and then perforating the outer tube at the points of the trickling elements using a further perforation device.
Dependencies are inferred from the claim text.