| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and apparatus for producing a spunbonded nonwoven fabric by which the fiber diameter can be reduced without reducing the productivity, and the nonwoven fabric can be stably produced. SOLUTION: This method for producing the spunbonded nonwoven fabric by cooling many melt-spun continuous filaments by a cooling air introduced into a cooling chamber, drawing the cooled filaments by a drawing air, and accumulating the drawn filaments on a moving collecting face is characterized in that the cooling air introduced into the cooling chamber is divided to at least two layers in the upper and lower direction, and the wind speed of the cooling air at the lowest layer is regulated so as to be higher than that at the highest layer. The apparatus for producing the spunbonded nonwoven fabric has the cooling chamber for cooling the spun filaments by the cooling air, the drawing part for drawing the cooled filaments, and the moving collecting face for allowing the filaments discharged from the drawing part to be accumulated thereon, and is regulated so that the cooling air to be introduced into the cooling chamber may be divided to at least two layers in the upper and lower direction, and the wind speed of the cooling air at each layer can be controlled independently.
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