Abstract: A nozzle device for spinning comprising a nozzle, a polymer solution supply means that supplies a polymer solution to the nozzle and ejects the polymer solution from the nozzle tip, and a solvent vapor supply means that supplies a gas containing vapor of the same solvent as the solvent of the polymer solution at least to the vicinity of the polymer solution just ejected, and a spinning method using the nozzle device for spinning. Solidification of a spinning solution is prevented at the nozzle tip from which the spinning solution is ejected.

Abstract: [Problems] To provide a resin composition having excellent flame retardancy and a fiber having excellent flame retardancy, without deteriorating conventional mechanical properties by adding a small amount of a flame-retardant additive. [Means for Resolution] A flame-retardant resin composition comprising a resin and composite particles in an amount of 1% by weight or more based on the resin, which are mainly composed of titanium dioxide and silicon dioxide and have a titanium dioxide content of 10 to 30% by weight and a silicon dioxide content of 70 to 90% by weight, a flame-retardant fiber obtained by fiberizing this flame-retardant resin composition, a heat-resistant cloth using this flame-retardant fiber, and further, protective clothing using this cloth.

Abstract: A wholly aromatic polyamide fiber which has excellent mechanical properties (toughness factor) and can be produced while attaining a satisfactory operation stability in the fiber formation step. The fiber comprises 100 parts by mass of a wholly aromatic polyamide and 0.05 to 20 parts by mass of particles of a lamellar clay mineral, e.g., hectorite, saponite, stevensite, beidellite, montmorillonite, or swelling mica.