| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multilayered nonwoven fabric of conjugate spun-bonded filaments having improved characteristics, and method for producing the same. <P>SOLUTION: The invention relates to the multilayered nonwoven fabric of conjugate spun-bonded filaments having improved characteristics. In a method for producing the multilayered nonwoven fabric comprising a spun-bonded filament nonwoven fabric as the outmost layer, an inner layer having at least a melt-blown nonwoven fabric layer and, if necessary, at least one layer of spun-bonded nonwoven fabrics and a melt-blown nonwoven fabrics further laminated, the method includes constituting the spun-bonded nonwoven fabric layer constituting the outmost layer from a sheath-core filament in which a low melting point polymer encloses high melting point polymer in the longitudinal direction of the fiber, and forming a melt-blown nonwoven fabric layers between the spun-bonded nonwoven fabric layer composed of the sheath-core filament, forming web by laminating the resulting material on a continuous belt, and then forming it into a sheet shape by thermally heat bonding (bonding) with a thermo-compression bonding calender and then heat treating the resultant material with a suction drum. <P>COPYRIGHT: (C)2011,JPO&INPIT |
