Non-woven structure with fibers catalyzed by a metallocene catalyst

A non-tufted carpet comprising, as a facing layer, an entangled and at least partially bonded non-woven structure made of 100% staple fibers by weight of the entangled and bonded non-woven structure, and at least a partial bonding of the staple fibers of the non-woven structure, the at least partial bonding comprising thermally activated bonds between a first polypropylene or polypropylene copolymer material produced with at least one catalyst being a metallocene catalyst and having a melting point in the range 130-170° C. and a second polypropylene or polypropylene copolymer material having a melting point which is at least 10° C. higher than the melting point of the first material, the weight of the first material in the non-woven structure being at least 3% of the weight of the entangled and at least partially bonded nonwoven structure, wherein the staple fibers consist of a bicomponent fiber, wherein the bicomponent fiber is a sheath/core bicomponent fiber, having the first material as the sheath and the second material as the core, wherein the first and second materials are present in a weight ratio of 20:80 to 30:70.