DuPont high strength spunbonded polypropylene primary carpet backing is a versatile nonwoven material developed by DuPont as a primary backing for tufted carpets. This product is manufactured by a unique integrated process in which continuous filaments of polypropylene are spun and immediately formed into a web that is heatbonded at filament crossover points. For over thirty years, DuPont primary carpet backing offers carpet manufacturers distinctive advantages not found in woven backing materials. Specifique grades, in different colors and surface finish, are available.