An industrial fabric 100 is an industrial fabric in which an upper surface side fabric composed of upper surface side warps and upper surface side wefts and a lower surface side fabric composed of lower surface side warps and lower surface side wefts are bound to each other, wherein an upper surface side warp 1Ub functions as an upper surface side binding yarn binding the upper surface side fabric and the lower surface side fabric, and a lower surface side warp 2Lb functions as a lower surface side binding yarn binding the upper surface side fabric and the lower surface side fabric. The number of knuckles formed by the upper surface side warp 1Ub in the upper surface side fabric is larger than the number of knuckles formed by the lower surface side warp 2Lb in the upper surface side fabric.

An industrial fabric 100 is an industrial fabric in which an upper surface side fabric composed of upper surface side warps and upper surface side wefts and a lower surface side fabric composed of lower surface side warps and lower surface side wefts are bound to each other, wherein an upper surface side warp 1Ub functions as an upper surface side binding yarn binding the upper surface side fabric and the lower surface side fabric, and a lower surface side warp 2 Lb functions as a lower surface side binding yarn binding the upper surface side fabric and the lower surface side fabric. The number of knuckles formed by the upper surface side warp 1Ub in the upper surface side fabric is larger than the number of knuckles formed by the lower surface side warp 2 Lb in the upper surface side fabric.

A silt fence includes a plurality of spaced stakes and a silt fence fabric coupled to the stakes wherein the silt fence fabric is a nonwoven needle punched fabric having a thickness of at least 5.25 mm, a denier size of 10-25 and a weight of 9-24 oz/square yard. The silt fence fabric may be asymmetrical dual sided needle punched wherein the downstream side of the fabric is punched 2-6 times more than the upstream side. The silt fence fabric may have a transverse direction orientation of fibers forming the fabric. The fence may include two independent tensioning members. The silt fence may include at least one vertical transverstivity cutoff element that prevents water from migrating from above the cutoff element within the fabric to below the cutoff element.

Methods are provided for producing patterned nonwoven materials and patterned laminated multilayer materials which include one or more layers of nonwoven. A nonwoven with heat-activatable binder fibers or binder materials is heated, subjected to patterned pressure. This softens or melts the binder and allows movement of the fibers in the nonwoven according to the pattern pressure. Then, the nonwoven is cooled so that the binder solidifies to lock a durable three-dimensional pattern into the structure. With a multilayer layup, for example, including a substrate layer, an adhesive layer, and a nonwoven layer, the layup is heated to melt the adhesive and soften binder in the nonwoven, then subjected to pattern pressure such as by being pressed with patterned plates, belts, or rollers, and cooled to bond the layers together, and to bond the fibers in the nonwoven according to the pattern pressure so as to fix the pattern. The processes may be carried out in batch mode or continuously using a flatbed laminating machine with heating and cooling zones. Engraved rollers, which may be heated or cooled depending on process conditions, can also be employed. The resulting materials exhibit stable three-dimensional patterns, typically 1-25 mm deep, suitable for functional and aesthetic applications.