A nonwoven paper and method of manufacturing the same, where the nonwoven paper includes a thermally treated, wet-laid fiber mixture that includes a plurality of cellulosic fibers or pulp comprising about 60% to about 90% of the fiber mixture and a plurality of bicomponent binder fibers comprising about 10% to about 40% of the fiber mixture.

Methods and apparatuses for producing a zoned and/or layered substrate are described. A substrate can include a first layer including a first zone, a second zone, and an interface between zones. The first zone can include a plurality of fibers. The second zone can include a plurality of fibers and can be offset from the first zone in a cross-direction. The interface can include at least some of the plurality of fibers of the first zone and at least some of the plurality of fibers of the second zone to provide a purity gradient with a transition width less than 3.8 cm as defined by the Purity Gradient Test Method as described herein.

The present invention relates to a nonwoven fabric for cabin air filter including a low melting point polyester fiber, in which the nonwoven fabric for cabin air filter includes a first polyester fiber containing a polyester resin having a melting point higher than 250 C. and a second polyester fiber containing a low melting point polyester resin having a softening point of 100 to 150 C., the first polyester fiber is a modified cross-sectional yarn having a roundness of 50 to 80%, the second polyester fiber includes a low melting point polyester resin which is formed from an acid component included of terephthalic acid or ester-forming derivatives thereof, and a diol component included of 2-methyl-1,3-propanediol, 2-methyl-1,3-pentanediol, and ethylene glycol, and the second polyester fiber contains illite particles, i.e., micaceous mineral, or a mixture of the illite particles and sericite particles, and silver-based inorganic antibacterial agent particles.

A nonwoven paper and method of manufacturing the same, where the nonwoven paper includes a thermally treated, wet-laid fiber mixture that includes a plurality of cellulosic fibers or pulp comprising about 60% to about 90% of the fiber mixture and a plurality of bicomponent binder fibers comprising about 10% to about 40% of the fiber mixture.

Aspects herein are directed to a recyclable, asymmetrical-faced composite nonwoven textile suitable for use in apparel and other articles and methods of making the same. In example aspects, the asymmetrical-faced composite nonwoven textile includes a first face formed, at least in part from a first entangled web of fibers and an opposite second face formed, at least in part from a second entangled web of fibers. When incorporated into an article of apparel, the first face forms an outer-facing surface of the article of apparel, and the second face forms an inner-facing surface of the article of apparel. The first face includes features making it suitable to form the outer-facing surface such as resistance to abrasion, and the second face includes features making it suitable to form an inner-facing surface such as a soft hand.

The present invention provides a non-woven fabric for supporting a solid electrolyte in which heat-fusible composite fibers with a crimp are contained in an amount of not less than 60 mass % and not more than 100 mass % and are heat-fused, and a solid electrolyte sheet. The non-woven fabric for supporting a solid electrolyte is excellent in process performance, is satisfactorily filled with a solid electrolyte, is suitable for achieving a thin solid electrolyte sheet, and has few hole defects. The solid electrolyte sheet is excellent in self-sustainability and flexibility.

A non-woven fabric and a battery separator which have good handleability, high tensile strength and a thin thickness. The non-woven fabric is composed of a composite fiber of a core-sheath structure consisting of a core part and a sheath part covering the core part, wherein the core part of the composite fiber is formed of a first polyolefin-based resin, the sheath part of the composite fiber is formed of a second polyolefin-based resin having a melting point lower than that of the first polyolefin-based resin, a plurality of composite fibers are integrated by fusion-bonding the sheath parts each other, and the non-woven fabric has a basis weight of 3 g/m.sup.2 or more and an amount of strain, S, of 50 mm.sup.2 or less as calculated by a following formula (I)
S (mm.sup.2)=(MD.sub.1MD.sub.0)(CD.sub.0CD.sub.1)(I).

A polyethylene copolymer may comprise about 90 wt % to about 99.99 wt % ethylene and about 0.01 wt % to about 10 wt % an alpha-olefin that is not ethylene, wherein the polyethylene has: a density of about 0.930 g/cm.sup.3 to about 0.955 g/cm.sup.3, a melt flow index (2.16 kg at 190 C.) of about 10 g/10 min to about 50 g/10 min, a melt flow index ratio (MIR) of about 15 to about 25, a weight average molecular weight to number average molecular weight ratio (Mw/Mn) of about 2 to about 4, a wt % of TREF elution at 90 C. and less of about 10 wt % to about 80 wt %, and a wt % of TREF elution at 95 C. and greater of about 3 wt % or more. Said polyethylene may be especially well-suited for making bicomponent fibers, which may be useful producing in nonwoven fabrics.

Aspects herein are directed to a recyclable, asymmetrical-faced composite nonwoven textile suitable for use in apparel and other articles and methods of making the same. In example aspects, the asymmetrical-faced composite nonwoven textile includes a first face formed, at least in part from a first entangled web of fibers and an opposite second face formed, at least in part from a second entangled web of fibers. When incorporated into an article of apparel, the first face forms an outer-facing surface of the article of apparel, and the second face forms an inner-facing surface of the article of apparel. The first face includes features making it suitable to form the outer-facing surface such as resistance to abrasion, and the second face includes features making it suitable to form an inner-facing surface such as a soft hand.

Disclosed are layered composite articles comprising: a) a rigid backing portion comprising a rigid core having a first surface and an opposed second surface, wherein the rigid core comprises at least one densified fiber batt and wherein the at least one densified fiber batt is comprised of a first plurality of oriented fibers having a first melting point and a second plurality of oriented fibers having a second melting point different from the first melting point; and b) a decorative portion having a first surface and an opposed second surface, wherein the second surface of the decorative portion is affixed to the first surface of the rigid core. Also disclosed herein are methods of making the same.