What is provided is a method for stably producing a fiber-reinforced resin molding material by splitting a fiber bundle such that a split portion becomes long while anon-split portion is shortened. A method for producing a fiber-reinforced resin molding material in which a cut fiber bundle is impregnated with a resin, the method comprising a splitting step of splitting the fiber bundle with a splitting machine at intervals in a longitudinal direction and a cutting step of cutting the fiber bundle at intervals in the longitudinal direction after the splitting step, in which the splitting machine comprises a rotary blade having a releasing section and a spacer member adjacent to the rotary blade.

A method for making a fiber reinforcement with variations in transverse cross section is disclosed. The method includes forming a fiber comprising polymeric material and exposing the fiber to a heat treatment, such that at least a portion of the polymeric material at or near said surface of said fiber is at or above the melting point temperature and substantially all of the polymeric material at or near the core is below the melting point temperature. The method further includes cooling the fiber to a temperature below the melting point temperature.

Lightweight, flexible protective fabrics for protecting a person, animal or other object from hot burning materials, hot high heat capacity and/or hot corrosive materials, such as hot molten metal, hot oily liquids (e.g., heating oil), hot gels, hot solids, hot sparks, and hot acids. The lightweight protective fabrics can be used to protect a person, animal or other object from hot molten metals, such as liquid metal zinc heated to a temperature of about 950 F. (510 C.) or greater, hot molten aluminum heated to a temperature of about 1150 F. (620 C.) or greater, burning phosphorus at temperature of about 1550 F. (843 C.) or greater, hot solid iron having a temperature of about 500 F. (260 C.) or greater, hot heating oil having a temperature of about 500 F. (260 C.) or greater, and hot hydrochloric acid having a temperature of about 300 F. (150 C.) or greater.

Lightweight, flexible protective fabrics for protecting a person, animal or other object from hot burning materials, hot high heat capacity and/or hot corrosive materials, such as hot molten metal, hot oily liquids (e.g., heating oil), hot gels, hot solids, hot sparks, and hot acids. The lightweight protective fabrics can be used to protect a person, animal or other object from hot molten metals, such as liquid metal zinc heated to a temperature of about 950 F. (510 C.) or greater, hot molten aluminum heated to a temperature of about 1150 F. (620 C.) or greater, burning phosphorus at temperature of about 1550 F. (843 C.) or greater, hot solid iron having a temperature of about 500 F. (260 C.) or greater, hot heating oil having a temperature of about 500 F. (260 C.) or greater, and hot hydrochloric acid having a temperature of about 300 F. (150 C.) or greater.

Artificial hair includes a fiber bundle including a large crimp part having alternatively formed first peak parts and first valley parts with a minimum pitch of 1 mm or more. A minimum amplitude of the large crimp part is 0.30 mm or more and 4 mm or less, and the large crimp part includes a small crimp part having a pitch smaller than that of the large crimp part near one peak part. The small crimp part has alternatively formed second peak parts and second valley parts, and wherein a minimum amplitude of the small crimp part is smaller than the minimum amplitude of the large crimp part.

Provided herein relates to methods for preparing micron range silk fibers (or silk microfibers) and compositions comprising a micron range silk fiber (or a silk microfiber). The micron range silk fibers (or silk microfibers) can be used in various applications ranging from fillers in cosmetics to reinforcement materials to design high strength composites, e.g., reinforced scaffolds. In some embodiments, the silk microfiber-reinforced scaffolds can be used for bone graft applications because of their high compressive strength.

Provided herein relates to methods for preparing micron range silk fibers (or silk microfibers) and compositions comprising a micron range silk fiber (or a silk microfiber). The micron range silk fibers (or silk microfibers) can be used in various applications ranging from fillers in cosmetics to reinforcement materials to design high strength composites, e.g., reinforced scaffolds. In some embodiments, the silk microfiber-reinforced scaffolds can be used for bone graft applications because of their high compressive strength.

A cooling material is provided. The cooling material can include a yarn having a defined denier of less than or equal to approximately 90 denier, wherein the yarn can comprise a cooling additive disposed on or in a polymer. In some embodiments, the yarn can be at least one of a warp or a weft of a woven fabric. A method can comprise receiving a cooling material, wherein the cooling material comprises: a polymer and a cooling additive, wherein the cooling additive is disposed on or in the polymer; and processing the cooling material by employing a non-weaving technique to create a non-woven fabric. In some embodiments, the non-weaving technique is one of a meltblown process, a spunbond process, or a multi-denier process.

The present invention relates to a process for manufacturing lyocell filament yarn with improved mechanical properties and an apparatus thereof. The process involves washing of filament yarn with sequential decrease in NMMO concentrations and filament yarn drying under relaxed conditions. Additionally, the present invention also provides a compact washing and drying apparatus that uses controlled air gap spinning thereby resulting in production of LFY under relaxed conditions and also having a higher mechanical properties & productivity.

A long-term cooling material is provided. The long-term cooling material includes: a yarn having a defined denier of less than or equal to approximately 70 denier and a defined yarn count; and a cooling mineral core disposed on the yarn and comprising nanosilver, wherein the cooling material is a material knit on a 28 gauge or greater knitting machine. In some embodiments, the yarn count can be greater than or equal to approximately 36 rows per inch. The yarn can include Nylon 6. An article of manufacture is provided. The article can include a non-cooling material disposed to be positioned over two or more portions of the body; and a cooling material disposed to be positioned on the non-cooling material at selected locations indicative of areas of the body prone to overheating.