Abstract: A flame-retardant polyester artificial hair filaments according to the present invention comprises: (A) 100 parts by weight of a thermoplastic polyester resin; (B) 10-20 parts by weight of a polymeric brominated polystyrene flame retardant; (B) 5-10 parts by weight of a polymeric phosphorus flame retardant; (D) 0.1-3 parts by weight of a chain extender; and (E) 0.5-3 parts by weight of sodium antimonate.

Abstract: A flame-retardant polyester artificial hair filaments according to the present invention comprises: (A) 100 parts by weight of a thermoplastic polyester resin; (B) 10-20 parts by weight of a polymeric brominated polystyrene flame retardant; (B) 5-10 parts by weight of a polymeric phosphorus flame retardant; (D) 0.1-3 parts by weight of a chain extender; and (E) 0.5-3 parts by weight of sodium antimonate.

Abstract: A flame-retardant polyester artificial hair filaments is provided which comprises: (A) 100 parts by weight of a thermoplastic polyester resin; (B) 10-30 parts by weight of a polymeric phosphorus-based flame retardant; (C) 0.1-3 parts by weight of a chain extender; and (D) 0.5-3 parts by weight of sodium antimonate. The polymeric phosphorus-based flame retardant (B) may be a flame retardant having a repeat unit of formula 1 and a weight-average molecular weight ranging from 80,000 to 150,000. The flame-retardant polyester artificial hair filaments can be prepared by: extruding a composition comprising a mixture of a polyester resin, a polymeric phosphorus-based flame retardant, a chain extender and sodium antimonate to form a pellet; drying the pellet to a water content of 500 ppm or less; melt-spinning the dried pellet to prepare a undrawn yarn; drawing the undrawn yarn at a draw ratio of 2-5; and heat-treating the drawn yarn in a heat treatment device heated to a temperature of 150˜280° C.

Abstract: A flame-retardant polyester artificial hair filaments is provided which comprises: (A) 100 parts by weight of a thermoplastic polyester resin; (B) 10-30 parts by weight of a polymeric phosphorus-based flame retardant; (C) 0.1-3 parts by weight of a chain extender; and (D) 0.5-3 parts by weight of sodium antimonate. The polymeric phosphorus-based flame retardant (B) may be a flame retardant having a repeat unit of formula 1 and a weight-average molecular weight ranging from 80,000 to 150,000. The flame-retardant polyester artificial hair filaments can be prepared by: extruding a composition comprising a mixture of a polyester resin, a polymeric phosphorus-based flame retardant, a chain extender and sodium antimonate to form a pellet; drying the pellet to a water content of 500 ppm or less; melt-spinning the dried pellet to prepare a undrawn yarn; drawing the undrawn yarn at a draw ratio of 2-5; and heat-treating the drawn yarn in a heat treatment device heated to a temperature of 150˜280° C.

Abstract: The present invention provides a polyphenylene sulfide synthetic hair filament. The synthetic hair filament comprises (A) a polyphenylene sulfide resin; and (B) an inorganic particle quencher additive, wherein said PPS resin melt index range is 60˜110, wherein said inorganic quencher additive is added at 0.1˜2.0 parts by weight on a 100 parts by weight PPS resin. The synthetic hair filament has a filament size of about 30 to about 80 dtex. The polyphenylene sulfide resin (A) has a p-phenylene sulfide repeating unit above 85% mole. The inorganic particle quencher additive may be of silicon dioxide, talc or the combinations thereof. A suitable inorganic particle quencher additive has an average diameter range of 0.01˜3.0 ?m.

Abstract: A manufacturing process in which a plurality of fluid jetting apparatuses are formed includes forming and sequentially adhering a heat driving part, a membrane and a nozzle part, respectively. The fluid jetting apparatuses are completed as a wafer unit by forming the nozzle part by forming a nozzle plate on a substrate of a wafer by a spinning process; forming jetting fluid barriers on the nozzle plate by the spinning process; forming jetting fluid chambers in the jetting fluid barriers; forming nozzles in the nozzle plate; and separating the substrate from the nozzle plate after the nozzle part and the membrane are adhered to each other. The forming jetting fluid chambers is accomplished by a process of wet etching, and the forming nozzles is accomplished by a treating apparatus of a laser beam or by a process of reactive ion etching.

Abstract: A manufacturing process of a plurality of fluid jetting apparatuses in a print head adapted to an output unit. The process forms a heat driving part, a membrane and a nozzle part, respectively, and then adheres them sequentially. The fluid jetting apparatuses are completed as a wafer unit by forming the nozzle part using a spinning process. The manufacturing process of the nozzle part includes a first step of forming a nozzle plate on a substrate of a wafer by the spinning process; a second step of forming jetting fluid barriers on the nozzle plate by the spinning process; a third step of forming jetting fluid chambers in the jetting fluid barriers; a fourth step of forming nozzles in the nozzle plate; and a fifth step of separating the substrate from the nozzle plate. The fifth step is accomplished after the nozzle part and the membrane are adhered to each other.