PRIMARY CARPET BACKING FOR LATEX FREE TUFTED CARPETS

Summary of the invention: A primary carpet backing for latex free tufted carpets, the latex free tufted carpet comprising tufting yarns tufted into the primary carpet backing, the tufting yarns consisting essentially of a first thermoplastic polymer selected from a polyamide, a polyester or a polyolefin the first polymer having a first melting temperature and wherein the back stitches of the tufting yarns have been at least partially melted for achieving tuft bind in the latex free tufted carpet after the melted back stitches have been cooled to room temperature, the primary carpet backing comprising at least a first layer of fibers, wherein the primary carpet backing consists for at least 30 wt.% of one or more lower melting polymers of the same polymer family as the first polymer comprised in the tufting yarns and wherein each of the one or more lower melting polymers of the same polymer family comprised in the primary carpet backing has a melting temperature which is equal to or less than the first melting temperature.