| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonwoven fabric excellent in water retention, diffusivity, and a suction height.SOLUTION: The nonwoven fabric comprises heat-bonding composite fibers made of a thermoplastic resin and composed of a high melting point component (A) and a low melting point component (B) that comprises a resin composition containing a crystalline resin (a) and an amorphous resin (b) and separates or surrounds the high melting point component (A). (1) The mass ratio of the high melting point component (A) to the low melting point component (B) is represented by the high melting point component (A)/the low melting point component (B)=45/55-35/65. (2) The crystalline resin (a) in the low melting point component (B) has a melting point that is equal to or lower than the glass transition point of the amorphous resin (b). (3) The content of the amorphous resin (b) is 5 mass % or more based on the whole heat-bonding composite fibers. (4) The nonwoven fabric is obtained by heat fusing the composite fibers. In the nonwoven fabric, the composite fibers of base fibers have a separation structure of two components of a massive part formed by aggregation of the low melting point component (B) and a fibrous part that mainly comprises the high melting point component (A) and pierces through the massive part. |
