Abstract: A conventional method for producing pile carpet, e.g. pile carpet whose pile fibers are tufted into a support layer, consists in providing the back side of the support layer with a non-woven and in linking said nonwoven with the support layer and with the dorsal fibers of the pile fibers by hydrodynamic needle-punching. The aim of the invention is to provide the support layer with a back of its own which preferably consists of a fusible fiber. The support layer may also contain said fibers. The pile fibers are tufted into the composite support layer, the back of the intermediate product is covered with an additional fleece which consists preferably of the fusible fibers, all the components are hydrodynamically needle-punched, and the product is heat-treated in order to melt the fibers.

Abstract: In the case of pile carpeting, e.g. whose pile fibres are tufted in a support layer, it is known to provide the backing of the support layer with a nonwoven and bond this to the support layer and the backing fibres of the pile fibres by means of hydrodynamic needle-punching. It is furthermore known to apply an intermediate layer to the support layer between support layer and nonwoven comprising at least partly fusible fibres and to bond the two by means of hydrodynamic needle punching to the carpet backing. The invention proposes that the intermediate layer is formed of a hot melt powder, short-staple fusible fibres or a fusible film and these should initially be moved into the backing of the support layer by hydrodynamic needling before the melting process effects the actual fixing of the pile fibres in the support layer.

Abstract: For a colour change in a pour-on system two application devices are provided one behind the other which are not jointly active at the same time for the dyeing. One of the two devices is brought to a standstill for the production by stopping the pumping of dye liquid for the dyeing and is cleaned and supplied with new dye liquid during the rest period. Not only stopping the pump but a liquid deflecting rail which deflects the liquid which is still flowing off into a collecting tray is used for exactly separating the film at the device which is active so far. This brings about a sharp-edged end of the application so far and a sharp-edged start of the new application.