| 摘要 |
<p>Self-expandable heat-bondable composite fibers which are made from polyethylene terephthalate as a fiber-forming resin ingredient and have a low modulus. The self-expandable heat-bondable composite fibers are made from a fiber-forming resin ingredient and a heat-bondable resin ingredient, and are characterized in that the fiber-forming resin ingredient comprises polyethylene terephthalate, the heat-bondable resin ingredient comprises a crystalline thermoplastic resin having a melting point lower by at least 20°C than that of the fiber-forming resin ingredient, and the fibers have an elongation at break of 130-600%, a tensile strength at 100% elongation of 0.3-1.0 cN/dtex, and a degree of shrinkage in 120°C dry heating lower than-1.0%. Also provided is a process for producing the composite fibers.</p> |
