In order to provide artificial leather having both strength (in particular, tensile strength and tear strength), surface appearance, and a dense feeling in artificial leather including a fiber-entangled body containing a nonwoven fabric made of ultrafine fibers containing a large amount of inorganic particles (in particular, metal compounds) as a constituent element, and an elastic polymer, the artificial leather of the present invention is artificial leather including a fiber-entangled body containing a nonwoven fabric made of ultrafine fibers having an average single fiber diameter of 1.0 ?m or more and 10.0 ?m or less as a constituent element and an elastic polymer, and satisfies the following requirements: (1) the ultrafine fibers include a polyester-based resin containing a manganese-based compound; (2) an average particle diameter of the manganese-based compound is 0.01 ?m or more and 0.20 ?m or less; and (3) the ultrafine fibers contain a manganese element in an amount of 0.1 ppm or more and 50.0 ppm or less in 100 mass % of the ultrafine fiber.

A nonwoven filtration medium that includes a fibrous base media including synthetic and/or natural fibers and micro fibrillated cellulose fibers.

The present invention is a novel improved process and apparatus for making polymeric fibers and combining these with cellulosic fibers so as to form a fibrous-containing nonwoven, and in particular fibrous material containing spunmelt nonwoven.

A multilayer nanofiber sheet (10) includes: a nanofiber layer (11) including nanofibers which comprise a water-soluble polymer compound; a substrate layer (12) arranged on one surface side of the nanofiber layer (11); and a water-insoluble porous layer (13) arranged on the other surface side of the nanofiber layer (11). The three layers are layered, and the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object. Preferably, the three layers are layered in a fixed state. Preferably, the porous layer (13) has a thickness of from 3 to 1000 m.

The present invention addresses the problem of providing: a polishing pad that is long-lasting, has a high polish rate, and is capable of producing a high degree of flatness on polished articles; and a method for manufacturing the polishing pad. The solution provided is to eliminate a sea component from a non-woven fabric that includes a binder fabric and a sea-island type composite fiber composed of the sea component and an island component, the island component having a diameter of 10-2500 nm, and to add a polymer elastic body to the non-woven fabric.

Self-regulating insulative batting is provided. The batting includes a blend of a plurality of fibers including functional fibers and non-functional fibers. The plurality of fibers are non-woven and oriented substantially vertically along a thickness direction of the batting. The functional fibers are configured to self-regulate at least one insulative quality of the batting based on changes in at least one environmental condition interacting with the batting. At least one of the length and thickness of the functional fibers changes based on changes in at least one environmental condition interacting with the batting. Articles comprising the self-regulating batting and methods of making the self-regulating batting are also provided.

A light weight composite thermally insulating sheet is comprised of down insulation mixed with binding fibers and plant-based material fibers. The plant-based material fibers maintain their original state during heat treatment to bind the core material together. As the binding fibers soften, they bind together at their crossing and also attach to the plant-based material fibers which remain in their original state creating an inner bonded support fiber structure made of plant-based material fibers and binding fibers. This fiber structure maintains the loft in the core by resisting to heat deformation of the binder material during the heat treatment to reduce compression of core material. The plant-based material fibers also act as wicking conductors to conduct moisture out of the down material and providing a faster drying of the thermally insulating sheet. Carbon fibers may be added to the core mixture of the scrim sheets, if used, may be formed of charcoal yarn to absorb odors.

A wound product and a method of manufacturing the wound product is provided. The wound product comprises a first layer comprising a plurality of splittable fibres. At least some of the plurality of splittable fibres are split longitudinally along at least part of their length, and at least some of the plurality of splittable fibres are entangled.

The present invention is intended to provide a spunbond nonwoven fabric having low pressure loss, high collecting performance, and excellent processability and an air filter fabricated using the spunbond nonwoven fabric, the spunbond nonwoven fabric including fibers formed of a polyolefin-based resin, in which an average single fiber diameter of the fibers is 6.5 ?m or more and 22.0 ?m or less, a hindered amine-based compound represented by Formula (1) is contained at 0.1% by mass or more and 5% by mass or less, a melt flow rate (MFR) of the nonwoven fabric is 32 g/10 minutes or more and 850 g/10 minutes or less, and the nonwoven fabric is processed into an electret.

A glass fiber mat comprises glass fibers of a first kind, glass fibers of a second kind and a binding agent. Glass fibers of the first kind in this case are characterized by a mean fiber diameter of under 6 m and compliance with the EC Protocol ECB/TM/27 rev. 7 and glass fibers of the second kind by a mean fiber diameter of over 6 m. The ratio between the weight component of glass fibers of the first kind and the weight component of glass fibers of the second kind is between 0.01 and 0.15. And the surface weight of the glass fiber mat is between 25 g/m2 and 80 g/m2. In a CV floor covering comprising a usable layer and a structural layer, the structural layer comprises a glass fiber mat of this kind provided with impregnation.