US Patent 8673097 Anchoring loops of fibers needled into a carrier sheet

Methods of forming a loop product are provided. Methods include needling polymeric fibers through a substrate to form hook-engageable loop structures of the fibers extending from one surface of the substrate and then using heat and pressure to soften and bond polymer of the fibers directly to the substrate and adjacent fibers, thereby anchoring the loop structures to resist fiber pullout under fastening loads. Loop products are also provided.