Needling loops into carrier sheets

摘要

Methods of making a sheet-form loop product are provided. One method includes placing a layer of staple fibers against a first side of a substrate comprising a nonwoven web; needling fibers of the layer through the substrate by penetrating the substrate with needles that drag portions of the fibers through the substrate, leaving exposed loops of the fibers extending from a second side of the substrate; and anchoring fibers forming the loops by fusing the fibers to each other and to filaments of the nonwoven web on the first side of the substrate, while substantially preventing fusion of the fibers on the second side of the substrate. Sheet-form loop products are also provided, including for example a flexible nonwoven substrate and a layer of staple fibers disposed on a first side of the substrate, exposed loops of the fibers extending from a second side of the substrate, with bases of the loops being anchored on the first side of the substrate, wherein the fibers on the first side of the substrate are fused together to a relatively greater extent than the fibers on the second side of the substrate.

主权项

1. A method of making a sheet-form hook-engageable loop product, the method comprising
placing a layer of staple fibers on a first side of a substrate, the substrate comprising a nonwoven web; needling fibers of the layer through the nonwoven web by penetrating the substrate with needles that drag portions of the fibers through the nonwoven web during needling, leaving exposed loops of the fibers extending from a second side of the substrate; and anchoring fibers forming the loops to the nonwoven web, wherein anchoring the fibers to the nonwoven web comprises laminating the fibers to the nonwoven web by applying heat and pressure to the fibers and the nonwoven web, wherein the layer of staple fibers placed on the nonwoven web has a total fiber weight of less than about 2 ounces per square yard (67 grams per square meter), and the hook-engageable loop product has an overall weight of less than about 5 ounces per square yard (167 grams per square meter), wherein the fibers are loose and unbonded to the nonwoven web and each other until needled.