The present invention relates to fibrillated lyocell fibers which have a fibrillation ratio Q of 20 or more and whose content of microfibers with a fineness of less than 14 mesh and a diameter of less than 2 μm is at least 50%, as well as the use thereof for producing a wipe, which contains cellulosic fibers and 5 to 20 wt. % of fibrillated lyocell fibers.

The present invention relates to a dispersible non-woven fabric, a method for producing a dispersible non-woven fabric and a wipe or tissue. The dispersible non-woven fabric comprises natural pulp fibers in an amount of from 70 to 90 wt.-% based on the total weight of the non-woven fabric and cellulosic fibers in an amount of from 10 to 30 wt.-% based on the total weight of the non-woven fabric. At least a part of the pulp fibers and of the cellulosic fibers are entangled with each other. At least 20% of the natural pulp fibers have a fiber coarseness of from 1.0 to 2.0 dtex.

A nonwoven web comprising a layer of polymeric fibers, wherein, based on the total number of polymeric fibers, at least 10% the polymeric fibers in said layer are coarse fibers having a fiber diameter of 4 μm or more, and at least 10% of the polymeric fibers in said layer are fine fibers having a fiber diameter of 2 μm or less. Also described herein is a method for making the nonwoven web, comprising melt-blowing a polymer mixture comprising two immiscible or partially miscible polymers.

Filter media comprising a filtration layer comprising synthetic fibers (e.g., pleatable backer layer) and related components, systems, and methods associated herewith are provided. In some embodiments, the filtration layer comprising synthetic fibers may be a non-woven web comprising a blend of coarse and fine diameter fibers. The filtration layer comprising synthetic fibers may be designed to have desirable performance properties without compromising certain mechanical properties, such as the pleatability of the media. In some embodiments, a filter media, described herein, may comprise the filtration layer comprising synthetic fibers and an efficiency layer. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.

Provided herein is a new fire barrier material composed of flame retardant (FR) cellulosic fiber(s) and one or more of an antimicrobial (AM) cellulosic fiber and an untreated cellulosic fiber(s). The fire barrier material may be a fabric woven or knitted from the yarn containing the FR cellulosic fiber(s) and the one or more of AM cellulosic fibers and untreated cellulosic fibers. When AM cellulosic fibers are combined with FR treated cellulosic fibers, the fire barrier material has the dual features of flame retardancy and antimicrobial properties. The fire barrier material may also be a nonwoven, and in preferred embodiments optionally includes a binder fiber. The FR cellulosic fiber contains FR chemical(s) or FR compound(s) that have a melting point or decomposition temperature at 400° C. (752° F.) or below. The FR performance of the new nonwoven provided herein is comparable to the conventional FR nonwoven (FR cellulosic fiber/binder fiber), but has advantages in cost effectiveness, as well as antimicrobial properties.

Nonwoven fibrous webs including randomly oriented discrete fibers defining a multiplicity of non-hollow projections extending from a major surface of the nonwoven fibrous web (as considered without the projections), and a plurality of substantially planar land areas formed between each adjoining projection in a plane defined by and substantially parallel with the major surface. In some exemplary embodiments, the randomly oriented discrete fibers include multi-component fibers having at least a first region having a first melting temperature and a second region having a second melting temperature, wherein the first melting temperature is less than the second melting temperature. At least a portion of the oriented discrete fibers are bonded together at a plurality of intersection points with the first region of the multi-component fibers. In certain embodiments, the patterned air-laid nonwoven fibrous webs include particulates. Methods of making and using such patterned air-laid nonwoven fibrous webs are also disclosed.

The present invention relates to a parchmentized fibrous support containing parchmentizable synthetic fibers parchmentized with sulfuric acid, the process for making such a support and the use thereof.

The present invention provides a mounting mat (30) for mounting a pollution control element (20) or monolith in a pollution control device (10), said mounting mat comprising a layer having a mixture of long and short fibers wherein said short fibers have a length of not more than about 13 mm and wherein said long fibers have a length of at least about 20 mm and wherein the amount of said short fibers is at least about 3% by weight based on the total weight of said mixture of long and short fibers.

To prepare a shaped product comprising a thermal adhesive fiber under moisture and having a fiber aggregate nonwoven structure. In the shaped product, the thermal adhesive fibers under moisture are melted to bond to fibers constituting the fiber aggregate nonwoven structure and the bonded fiber ratio is not more than 85%. The shaped product has an apparent density of 0.05 to 0.7 g/cm.sup.3, a maximum bending stress of not less than 0.05 MPa in at least one direction, and a bending stress of not less than ⅕ of the maximum bending stress at 1.5 times as large as the bending deflection at the maximum bending stress. The moistenable-thermal adhesive fiber may be a sheath-core form conjugated fiber comprising a sheath part comprising an ethylene-vinyl alcohol-series copolymer and a core part comprising a polyester-series resin. Such a shaped product can be used for a building board or the like since the shaped product has a high bending stress although the product is light and has a low density.

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.