Method and device for producing a double-walled thermoplastic corrugated pipe with a pipe sleeve

摘要

The method involves carrying out extrusion of an outer tube (Sa) forming the outer pipe of the double-walled pipe and an inner tube (Si) forming the inner pipe of the double-walled pipe in a shaped channel (10). The outer tube is extruded into the sleeve shape surface to shape the sleeve section and is brought in contact with the sleeve shape surface. The inner tube is extruded into the outer tube that is already in contact. An independent claim is included for a device for producing an endless double-walled pipe having corrugated pipe sections and connecting sleeve sections.