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AssigneesES FiberVisions LP, ES FiberVisions Hong Kong Limited, ES FiberVisions ApS
InventorsHITOSHI KUBOTA, TADASHI IDEGUTI
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The present invention are a heat-bondable conjugate fiber ensuring that the crimp configuration stability can be maintained even in the state of leaving elongation of the fiber and bulkiness and softness are imparted to the nonwoven fabric, and a nonwoven fabric using the same. A heat-bondable conjugate fiber comprises a first component containing a polyester-based resin and a second component containing a polyolefin-based resin having a melting point lower than the melting point of said polyester-based resin, wherein said second component is a heat-bondable conjugate fiber accounting for a specific range of the outer fiber circumference and having a side-by-side or eccentric sheath-core structure and the fiber has a specific elongation, a specific range of a three-dimensional actualized crimp and a specific range of a crimp modulus.
A heat-bondable conjugate fiber comprising a first component containing a polyester-based resin and a second component containing a polyolefin-based resin having a melting point lower by 15° C. or more than the melting point of said polyester-based resin, wherein said second component is a heat-bondable conjugate fiber accounting for 30% or more of the outer fiber circumference in the fiber cross-section intersecting the length direction of the fiber and having a side-by-side or eccentric sheath-core structure and the fiber has an elongation of 50 to 120%, a three-dimensional actualized crimp with 10 to 20 crests/2.54 cm and a crimp modulus of 85 to 100%.
Dependencies are inferred from the claim text.