yarn 14 for instance the binder may be cured by conventional or microwave heating it to its curing temperature by hitting it with the light waves in the long wavelength ultra violet uv range then the binder hardens and bonds the filaments to one another the curing chamber 51 is adjacent to and located downstream from the first chamber 20 both the curing chamber 51 and the first chamber 20 are integrated in the curing unit 52 typically in the curing chamber 51 there may be one or more heating compartments for curing the binder on the fibrous product and one or more cooling compartments a system for providing gas to the curing unit 52 and or sucking gas out of it see the arrows f in fig2 is connected to the curing unit 52 additionally heating elements outer contact heaters and heat source from inside the shaft 26 may be used prior to the curing chamber 51 itself uv curing may also be contemplated curing the binder gives to the fibrous product its final structure the fibrous product 100 is moved out of the curing unit 52 by the moving band 40 downstream from the curing unit 52 there is provided a cutting cell allowing the continuous fibrous product 100 to be cut at a desired length the cutting cell comprises a circular saw 60 which continuously rotates the saw 60 is moved radially towards the fibrous product 100 and cuts it while moving axially along the axis a with the same linear speed as the fibrous product 100 as the cutting process is over.