Patent ID: 8454786
Filing Date: 2013-06-04
Classification: A01G,B29C,B29K,B29L,Y02A

Abstract:
1. Method for production of drip irrigation tubes, in which a tube body is produced through a step of extrusion of a thermoplastic synthetic material, which tube body is formed to size and cooled off and in which tube body metering elements with a spacing apart from one another are inserted, are pressed onto the walling of the tube body and are welded together therewith, and which tube body is led through a drilling device, in which the walling is drilled through in the area of each of the metering elements, characterized in that the extruded tube body exiting the extrusion device is led directly and in a non-contacting way through an inlet aperture into a pre-cooling chamber in which the tube body is pre-cooled and in which the metering elements are connected to the walling and are completely pressed thereon, in that the tube body is subsequently led through a sizing device and is formed to the final diameter and arrives in the main cooling chamber in which the tube body is further cooled.