Provided is artificial hair including chemical fibers and a fiber treatment composition that is adhered to the surfaces of the chemical fibers. The fiber treatment composition may include an oxazoline group-containing acrylic resin and an organic-modified silicone oil. The oxazoline group-containing acrylic resin may have a main chain that includes a (meth)acrylic acid ester and styrene.

Disclosed is a method for preparation and activation of a super hydrophobic electret nanofibrous filter material for cleaning PM2.5, comprising the steps as follows: (1) dissolving polymer powders and resin into a corresponding solvent so as to prepare a polymer solution, then stirring on a magnetic stirrer and standing for use; (2) in order to reinforce the electrostatic effect of the fiber, before preparing the polymer solution, adding in organic electret nanoparticles into the solvent, then oscillating with an ultrasonic oscillator; (3) in order to reinforce the super hydrophobic effect of the filter, spraying a low surface energy solution on the prepared nanofiber with a designed nozzle to carry out modification.

An article comprising a fabric comprising: (a) a blended yarn comprising: (i) from about 10% to about 85% by weight of at least one biregional fiber comprising an oxidized polymer selected from the group consisting of acrylonitrile based homopolymers, acrylonitrile based copolymers, acrylonitrile based terpolymers, and combinations thereof; (ii) at least one companion fiber selected from the group consisting of FR polyester, FR nylon, FR rayon, FR treated cellulose, m-aramid, p-aramid, modacrylic, novoloid, melamine, wool, nylon, regenerated cellulose, polyvinyl chloride, antistatic fiber, poly(p-phenylene benzobisoxazole) (PBO), polybenzimidazole (PBI), polysulphonamide (PSA), and combinations thereof; and (b) optionally including a companion yarn different from said blended yarn; wherein said companion yarn includes p-aramid in an amount less than 20% of the fabric weight; and wherein the fabric has a weight from about 3 oz/yd.sup.2 to about 12 oz/yd.sup.2.

A fiber for artificial hair formed of a polyvinyl chloride-based resin composition. The fiber for artificial hair has a value X1 of a loss tangent tans at 70? C. of 0.06 or more and 0.12 or less, when dynamic viscoelasticity is measured under the following conditions, and has a peak in a temperature range of 90? C. or higher and 110? C. or lower. (Dynamic viscoelasticity measurement conditions) The measurement is performed by sandwiching a bundle of 40 fibers for artificial hair that are arranged at a heating rate of 4? C./min and a frequency of 1 Hz.

An article comprising a fabric comprising: (a) a blended yarn comprising: (i) from about 10% to about 85% by weight of at least one biregional fiber comprising an oxidized polymer selected from the group consisting of acrylonitrile based homopolymers, acrylonitrile based copolymers, acrylonitrile based terpolymers, and combinations thereof; (ii) at least one companion fiber selected from the group consisting of FR polyester, FR nylon, FR rayon, FR treated cellulose, m-aramid, p-aramid, modacrylic, novoloid, melamine, wool, nylon, regenerated cellulose, polyvinyl chloride, antistatic fiber, poly(p-phenylene benzobisoxazole) (PBO), polybenzimidazole (PBI), polysulphonamide (PSA), and combinations thereof; and (b) optionally including a companion yarn different from said blended yarn; wherein said companion yarn includes p-aramid in an amount less than 20% of the fabric weight; and
wherein the fabric has a weight from about 3 oz/yd.sup.2 to about 12 oz/yd.sup.2.

Disclosed is the preparation of improved high strength nylon staple fibers having a denier per filament of 1.0 to 3.0, a tenacity T at break of at least about 6.0, and a load-bearing capacity, T.sub.7, of greater than 3.2. Such nylon staple fibers are produced by preparing tows of relatively uniformly spun and quenched nylon filaments, drawing and annealing such tows via a two-stage drawing and annealing operation using relatively high draw ratios and then cutting or otherwise converting the drawn and annealed tows into the desired high strength nylon staple fibers.

The nylon staple fibers so prepared can be blended with other fibers such as cotton staple fibers to produce nylon/cotton (NYCO) yarns which are also of desirably high strength.

A resilient yarn, fabric having the resilient yarn, and outdoor products, such as sling furniture, are disclosed. The resilient yarn includes a core made with a thermoplastic elastomer. A sheath at least partially surrounds the core. The sheath includes polyvinyl chloride (PVC) or a blend of PVC and thermoplastic polyurethane (TPU).

The method for producing wet spun fibers/a wet formed film using a double-walled pipe type micronozzle apparatus according to the present invention is a production method, wherein, in a step of extruding an internal phase comprising a fiber/film material and a good solvent for the fiber/film material in a linear form from the circular/rectangular end of the internal pipe of the apparatus into an external phase comprising a poor solvent for the fiber/film material, the external phase flowing in the external pipe of the apparatus, the ratio of the external phase flow rate to the internal phase flow rate is set to 1 or more, and further for the wet spun fibers, the external phase line speed at the orifice portion at which the internal phase and the external phase merge is set to 0.1 ms.sup.1 or more.

A down-proof woven fabric includes a cloth composed of synthetic fibers with a yarn fineness of 33 decitex or less and having a weight per unit area of 50 g/m.sup.2 or less and a cover factor of 1,400 to 1,800, wherein the cloth is coated at least on one surface thereof with a resin by an amount of 0.1 g/m.sup.2 to 5 g/m.sup.2 as a solid component.

A fiber for artificial hair, the fiber containing a vinyl chloride polymer and an aromatic vinyl polymer, the fiber having a heat shrinkage rate at 100 C. of 7% or more. A fiber bundle for artificial hair having the fiber for artificial hair. A hair decoration product having the fiber bundle for artificial hair.