Polypropylene flexifilamentary fiber containing 0.1 to 10 weight percent of an organic spreading agent and nonwoven fabric made therefrom

摘要

The present invention relates to a polypropylene three- dimensional plexifilamentary fiber, a method of manufacturing same, and a nonwoven fabric composed of the above fiber.PPThe plexifilamentary fiber in accordance with the present invention has a three-dimensional plexifilamentary structure, and is characterized in that the fiber has a microwave birefringence of 0.07 or more. As a result, a dimensional stability under heating of the plexifilamentary fiber in accordance with the present invention is extremely high. Moreover, it is possible to obtain a plexifilamentary fiber having a high spreadability by adding a spreading agent to the plexifilamentary fiber. A nonwoven fabric made of such plexifilamentary fiber has a high thermal dimensional stability, and as a result, the nonwoven fabric in accordance with the present can be usefully used in a wrapping material having a heat resistance and air permeability, apparel having heat resistance and moisture permeability, a heat resistance paper, and engineering and building materials or the like.