| 摘要 |
PROBLEM TO BE SOLVED: To provide method of producing spun-bonded nonwoven fabric that can thin the fiber diameter without reduction in productivity and can stably produce nonwoven fabric and an apparatus for producing the same. SOLUTION: After being cooled down with cooling air introduced into the cooling chamber, a plurality of melt-extruded continuous filaments are drawn with drawing wind and stacked on the moving fabric mesh collector thereby producing the objective spun-bonded nonwoven fabric. In this case, the cooling air to be introduced into the cooking chamber is divided into at least two flows in the vertical direction and the flow speed of the lower side is made higher than that of the upper side. The objective apparatus for producing the spun- bonded fabric is equipped with the cooling chamber for cooling the melt- extruded filament, the drawing part for drawing melt-extruded filaments and the moving fabric mesh collector for stacking the drawn filaments in which the cooling air flow introduced into the cooling chamber is divided into at least vertically two sections and the flow rate of the lower section is made higher than that of the upper section.
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