| 摘要 |
A manufacturing method of polyester hollow fiber having a superior internal tearing strength and a superior abrasion resistance is provided to have a high hollow ratio, an excellent lightness, an excellent heat insulation property, an excellent internal tearing strength, an excellent tensile strength and an excellent abrasion resistance. A manufacturing method of polyester hollow fiber having a superior internal tearing strength and a superior abrasion resistance comprise a step of radiating polyethylene terephthalate resin melt of which an inherent viscosity(IV) is 0.7~1.2 through a spinneret consisting of two or more discharging slits arranged each other. The radiated unstretched fiber is extended at a stretching ratio of 1.5~3.0. |
