The disclosure relates to nonwoven fabric including a nonwoven material having a first surface and an opposing second surface, wherein the first surface has a first average surface charge and the second surface has a second average surface charge, the first average surface charge being different from the second average surface charge, wherein the nonwoven material includes a first plurality of fibers including a first polymer and a second plurality of fibers including a second polymer different from the first polymer. A method for imparting surface charge to a nonwoven N61824_1570Wabric is also provided.

A material for a primary carpet backing including a nonwoven fabric including first bicomponent core/sheath fibers including a first thermoplastic polymer in the core and a second thermoplastic polymer in the sheath and second bicomponent core/sheath fibers including a third thermoplastic polymer in the core and a fourth thermoplastic polymer in the sheath, wherein the first thermoplastic polymer in the core of the first bicomponent core/sheath fibers is of a different polymer family as the third thermoplastic polymer in the core of the second bicomponent core/sheath fibers, and wherein the second thermoplastic polymer in the sheath of the first bicomponent core/sheath fibers and the fourth thermoplastic polymer in the sheath of the second bicomponent core/sheath fibers are polymers of the same polymer family, preferably having the same melting temperature.

A material for a primary carpet backing including a nonwoven fabric including first bicomponent core/sheath fibers including a first thermoplastic polymer in the core and a second thermoplastic polymer in the sheath and second bicomponent core/sheath fibers including a third thermoplastic polymer in the core and a fourth thermoplastic polymer in the sheath, wherein the first thermoplastic polymer in the core of the first bicomponent core/sheath fibers is of a different polymer family as the third thermoplastic polymer in the core of the second bicomponent core/sheath fibers, and wherein the second thermoplastic polymer in the sheath of the first bicomponent core/sheath fibers and the fourth thermoplastic polymer in the sheath of the second bicomponent core/sheath fibers are polymers of the same polymer family, preferably having the same melting temperature.

There is provided a laminated nonwoven fabric having excellent sound absorbing performance in a low frequency range, the laminated nonwoven fabric having a skin layer and a base material layer, the skin layer having a nonwoven fabric A, the nonwoven fabric A having a density of 100 to 500 kg/m.sup.3, a thickness of 0.5 to 2.5 mm, and an air permeability of 4 to 40 cm.sup.3/cm.sup.2/s; and the base material layer having a nonwoven fabric B, the nonwoven fabric B having a basis weight of 200 to 500 g/m.sup.2 and a thickness of 5 to 40 mm.

There is provided a laminated nonwoven fabric having excellent sound absorbing performance in a low frequency range, the laminated nonwoven fabric having a skin layer and a base material layer, the skin layer having a nonwoven fabric A, the nonwoven fabric A having a density of 100 to 500 kg/m.sup.3, a thickness of 0.5 to 2.5 mm, and an air permeability of 4 to 40 cm.sup.3/cm.sup.2/s; and the base material layer having a nonwoven fabric B, the nonwoven fabric B having a basis weight of 200 to 500 g/m.sup.2 and a thickness of 5 to 40 mm.

Provided is a nonwoven fabric for skin care products. The nonwoven fabric includes: a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less; and a cellulose fiber. A tensile strength of the cellulose fiber measured in accordance with JIS L 1015:2010 8.7.2 is 1.9 cN/dtex or less, a total content of the thermoplastic resin fiber and the cellulose fiber is 85% by mass or more relative to a total mass of the nonwoven fabric for skin care products, a content ratio by mass of the thermoplastic resin fiber and the cellulose fiber (thermoplastic resin fiber/cellulose fiber) is 0.23 to 1.50, and a density of the nonwoven fabric for skin care products is 0.08 g/cm.sup.3 to 0.16 g/cm.sup.3.

Provided is a nonwoven fabric for skin care products. The nonwoven fabric includes: a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less; and a cellulose fiber. A tensile strength of the cellulose fiber measured in accordance with JIS L 1015:2010 8.7.2 is 1.9 cN/dtex or less, a total content of the thermoplastic resin fiber and the cellulose fiber is 85% by mass or more relative to a total mass of the nonwoven fabric for skin care products, a content ratio by mass of the thermoplastic resin fiber and the cellulose fiber (thermoplastic resin fiber/cellulose fiber) is 0.23 to 1.50, and a density of the nonwoven fabric for skin care products is 0.08 g/cm.sup.3 to 0.16 g/cm.sup.3.

An installation and a method for selectively producing a single-ply or alternatively a multi-ply nonwoven includes an inclined wire former configured to deposit a sheet of wet-laid fibre material on a first circulating belt, a further belt configured to receive the sheet of wet-laid fibre material from the first circulating belt, a roller card arranged downstream in the material transport direction and configured to introduce a roller card web into the installation, a hydroentanglement arranged downstream in the material transport direction and including at least one water beam configured to entangle, bond and/or structure a single sheet of fibres or a plurality of sheets of fibres, and a dryer arranged downstream in the material transport direction.

It is described a method for cleaning surfaces of an item of historical-artistic interest comprising a step of applying a wipe (1), comprising a membrane of non-woven fabric (2) soaked with a solvent, to a surface layer to be removed of said item of historical-artistic interest; it is also described a wipe (1) for cleaning surfaces of an item of historical-artistic interest, in particular a painting work, adapted to carry out said method, and a kit (10) comprising a plurality of wipes (1).

It is described a method for cleaning surfaces of an item of historical-artistic interest comprising a step of applying a wipe (1), comprising a membrane of non-woven fabric (2) soaked with a solvent, to a surface layer to be removed of said item of historical-artistic interest; it is also described a wipe (1) for cleaning surfaces of an item of historical-artistic interest, in particular a painting work, adapted to carry out said method, and a kit (10) comprising a plurality of wipes (1).