The separator of a nonaqueous electrolyte secondary battery is characterized by having a composite nanofiber fiber which is a nanosize fiber that contains two or more kinds of aqueous resins whose melting points are different.

Embodiments relate to an article of clothing that includes a base material with a moisture vapor transfer rate (MVTR) of at least 2000 g/m.sup.2/24 h (JIS 1099 A1). The article of clothing may further include a foam-based spacer material coupled to the first side of the base material. The foam-based spacer material may be positioned between the base material and a wearer of the article of clothing when the article of clothing is worn. The foam-based spacer material may be an array of discrete elements coupled with the base material. Other embodiments may be described and/or claimed.

A method is disclosed for making an elastic core yarn (50), wherein an elastic core (30) comprising a fibre (10) of natural rubber with metric count 200-1000 dtex is covered by a cotton-based covering yarn (40), comprises a step of conveying the elastic core (30) and the covering yarn (40) in such a way that the covering yarn (40) laterally attains a proximity of the elastic core (30) in a wrapping space (35); a step of helically wrapping the covering yarn (40) about the elastic core (30) in a wrapping space (35), wherein the conveying speed, and therefore the winding/unwinding speed, is selected such that the elastic core (30) is stretched up to a stretching ratio of at least 2, and such that, during this wrapping step, the covering yarn (40) becomes twisted with a final twist direction opposite to its initial twist direction, and forms a number T of coils per length unit of the elastic fibre (10) set between a predetermined minimum value T.sub.0 and a predetermined maximum value T.sub.1 both depending on the linear mass density Nm of covering yarn (40), the wrapping space (35) being enclosed by a container (67). An elasticised yarn obtained this way, and a fabric, in particular a denim type fabric, manufactured from this yarn.

Systems for producing M bundles of filaments, wherein M≥1, include N extruders, M spin stations, and a processor, wherein N>1. Each extruder includes a thermoplastic polymer having a color, hue, and/or dyability characteristic, which are different from each other. Each spin station produces N bundles of filaments that form a yarn. Each spin station comprises N spinnerets through which filaments are spun from molten polymers streams received by the respective spin station and N spin pumps upstream of the N spinnerets for the respective spin station. Each spin pump is paired with one of the N extruders. The processor is in electrical communication with the N*M spin pumps and is configured to adjust the volumetric flow rate of the polymers pumped from each spin pump to achieve a ratio of the polymers to be included in the yarn from each spin station.

A hook-and-loop fastener has a hook element comprising a substrate having a face from which projects a multiplicity of hooks and a loop element formed by of a fiber web. The fiber web is formed by a homogenous mixture of first multicomponent filaments each formed by a high-melting-point polymer and a low-melting-point polyolefinic polymer and second polyolefinic monocomponent filaments. The first filaments constitute between 20% and 80% by weight of the mixture. The fiber web has a face formed with a patterned array of dense bonded regions of a predetermined small thickness interspersed with less dense open regions of a predetermined big thickness substantially greater than the small thickness of the small thickness interspersed with less dense open regions of a predetermined big thickness substantially greater than the small thickness of the bonded regions so that the filaments of the open regions form loops.

Filter material, mainly in form of industrial remnants from the production of the filter fillings, is processed without the intake of the heat in such a way that it is cut in the disintegrator (4) at the presence of the air, where the material is during retention time repeatedly led to the contact with the rotating blades and bunches emerge in the disintegrator (4) through aeration. The flat carrier (3) is thus at least partially disintegrated to the original fibers (1); the released fibers (1) intertwine into bunches and the active carbon (2) is released from the original bond with the flat carrier (3). The swirl (vortex) created inside the disintegrator (4) carries the dust particles of the active carbon (2) and they adhere to the surface of the fibers (1). Part of the released active carbon (2) is—after the separation—carried away from the emergin bunches, which in the lower part of the disintegrator (4) run through the sieve out of the disintegrator (4). The resulting product is advantageously applicable as heat and noise isolation in all fields of technology, for example construction. The separated active carbon (2) in form of granules is also a resulting product of processing.

A material web is disclosed. The material web includes a fiber layer having a first side and an opposing second side. The fiber layer has a plurality of fibers, each of which having an intimate admixture of a thermoplastic polymer, and a wax and/or oil, wherein at least some of the wax and/or oil is exposed at an outer surface of the fibers. A surface energy treatment is disposed on the first side and/or the second side of the fiber layer.

The present invention relates to a body and hair towel comprising a microfiber interior layer and a silk exterior layer. The novel towel is comprised of a plurality of double layered capsules, wherein each capsule has an interior layer of microfiber material and an exterior layer of silk material. The exterior silk layer on the capsules provides an extremely smooth texture to the towel, thereby making the towel comfortable and convenient to use by people having dry skin, skin conditions or the like, and may also be comfortably used on hair without affecting the health of hair and skin of the users.

Processes for making fibrous structures and more particularly processes for making fibrous structures comprising filaments are provided.

Provided are bicomponent fibers. The bicomponent fiber comprises a first region and a second region. The first region comprises a first ethylene/alpha-olefin interpolymer, and the second region comprises a second ethylene/alpha-olefin interpolymer. The first ethylene/alpha-olefin interpolymer has a highest peak melting temperature (Tm) less than 130° C. and at least 3.5° C. greater than a highest peak melting temperature of the second ethylene/alpha-olefin interpolymer. The bicomponent fibers can be used for forming nonwovens that in aspect have improved tensile strength, elongation at break, and/or abrasion resistance.