Non woven fabrics including at least one nonwoven layer comprising a plurality of fibers comprising a polymeric material having a melt flow rate (MFR) of less than about 40 g/10 min according to ASTM D1238 (2.16 kg at 230° C.) are provided. The plurality of fibers includes (i) one or more ultraviolet radiation protective agents (UVPA), and (ii) one or more inorganic pigments comprising an inert coating thereon.

It is an object of the invention to provide a garment and sleepwear that can improve the quality of sleep, and to provide a method for improving the quality of sleep by using such a garment or sleepwear, and this is achieved by a garment for improving the quality of sleep, the garment including a fiber containing at least two kinds of nanoparticles that emit far-infrared radiation and cause electron transfer based on plasmon resonance.

Devices for radiative cooling and optical waveguiding are provided, wherein the devices comprise a fabric including one or more fibers extending for a length in a longitudinal direction and a plurality of void structures positioned within each of the one or more fibers and extended over the length of each of the one or more fibers. Each of the plurality of void structures is configured to scatter at least a portion of an electromagnetic radiation received thereon to thereby radiatively cool the object.

The invention addresses the problem of providing a cloth and a protective product, which are excellent not only in flame retardancy but also in protection performance against electric arcs, and can further be provided with any color appearance. As a means for resolution, in a cloth including a flame-retardant fiber, a UV absorber or carbon particles are contained in the cloth, and the cloth is configured to have a lightness index L-value of 25 or more.

The present disclosure provides a photochromic thermal insulation fiber including a core layer and a sheath layer covering the core layer. The core layer includes about 99 parts by weight to 100 parts by weight of polypropylene and about 0.4 parts by weight to 0.6 parts by weight of a photochromic dye. The sheath layer includes about 98 parts by weight to 99 parts by weight of nylon and about 1 part by weight to 2 parts by weight of a near-infrared reflecting dye.

An elastic fiber of the present invention having an elastic fiber treatment agent attached to the fiber surface, comprises: a hydrocarbon resin (A) having a structure in which a polymer including a structural unit whose monomer is at least one selected from aromatic olefins and aliphatic diolefins as the main structural unit is partially or fully hydrogenated; and a hydrocarbon oil (B). In this way, an elastic fiber and a fiber structure comprising the same are provided that are suitable for obtaining an elastic sheet that has excellent elastic fiber unraveling properties and adhesiveness to hot melt adhesives, and that exhibits good adhesiveness even when processed at a high draft, and for obtaining a sanitary product that is soft to the touch.

Provided is an elastic fiber treatment agent, containing; a hydrocarbon resin (A); and a hydrocarbon oil (B). The hydrocarbon resin (A) contains a polymer having a structural unit, as a main structural unit, derived from at least one monomer selected from aromatic olefin and aliphatic diolefin, the polymer being partially hydrogenated or fully hydrogenated. It is preferred that the hydrocarbon resin (A) contains a polymer having a structural unit derived from aromatic olefin as a monomer, the polymer being partially hydrogenated or fully hydrogenated, and the aromatic olefin is at least one selected from indene and methylstyrene. Thus, the elastic fiber treatment agent of the present invention imparts excellent unraveling properties to elastic fibers and has excellent adhesiveness to hot melt adhesives, enables the production of stretchable sheets exhibiting good adhesiveness even when processed at a high draft ratio, and is suitable for obtaining soft feel sanitary products.

Fabrics comprising regenerated cellulose fibers and a nanoparticle dispersed throughout the fabric are disclosed herein. The regenerated cellulose fibers can be derived from a biomass such as a fibrous cellulose, wood pulp, cotton, paper, bast fiber, bagasse, or a combination thereof. The nanoparticle included in the fabric can be chosen to confer a desirable property, such as a thermal insulating property, to the fabric. Methods of making the fabrics comprising the regenerated cellulose fibers and nanoparticle are also provided. The method can include (a) at least partially dissolving a cellulose substrate in a medium comprising one or more ionic liquids; and dissolving or suspending a nanoparticle in the medium; (b) recovering a solid nanoparticle-modified regenerated cellulose material comprising the cellulose substrate and the nanoparticle; and (c) processing the solid nanoparticle-modified regenerated cellulose material to form the fabric.

Provided is an elastic fiber treatment agent, containing; a hydrocarbon resin (A); and a hydrocarbon oil (B). The hydrocarbon resin (A) contains a polymer having a structural unit, as a main structural unit, derived from at least one monomer selected from aromatic olefin and aliphatic diolefin, the polymer being partially hydrogenated or fully hydrogenated. It is preferred that the hydrocarbon resin (A) contains a polymer having a structural unit derived from aromatic olefin as a monomer, the polymer being partially hydrogenated or fully hydrogenated, and the aromatic olefin is at least one selected from indene and methylstyrene. Thus, the elastic fiber treatment agent of the present invention imparts excellent unraveling properties to elastic fibers and has excellent adhesiveness to hot melt adhesives, enables the production of stretchable sheets exhibiting good adhesiveness even when processed at a high draft ratio, and is suitable for obtaining soft feel sanitary products.

An infrared-absorbent resin composition including a tungsten-based infrared-absorbent pigment, copolymerized polyethylene terephthalate, and a polyethylene terephthalate homopolymer, wherein the copolymerized polyethylene terephthalate is crystalline.