BigPatents India

A manufacturing method for a drip irrigation conduit of the type comprising the steps of manufacturing dripper units, introducing said dripper units one after the other inside said conduit while the latter is being formed in an extruder, then calibrated in a calibrator, heat welding said dripper units to the inner wall of the conduit during its progression downstream from said extruder then cooling said conduit and perforating the latter opposite each dripper unit to make it communicate with the exterior, said method being characterised in that said heat welding step is executed downstream of said calibrator by pinching the dripper unit and the wall of said conduit between first and second opposing surfaces, one of which is driven at the speed of progression of the conduit and the other is arranged on a fixed support element forming a feed guide for the dripper units.