DUCT ELEMENT FORMING AN AIR-CHANNEL FOR AIR HANDLING SYSTEMS

摘要

The object of the invention is thus a duct element made of a band-shaped strip (1 ) wound in a spiral form preferably forming an air-channel for air-handling systems wherein the edge surface of one side end and the reverse edge surface of the other side end overlap each other in an overlapping area (Y). The essence of the invention lies in that the material of the band-shaped strip (1 ) forming the duct element is a cross-linked polyolefin foam of closed cell-structure, and a reinforcing wire (2) is inserted in the overlapping area (Y).